Apparatus and methods for bone repair preparation

ABSTRACT

Apparatus and methods for preparing a fractured bone for repair. Preparing the bone may include fracture reduction. Preparing the bone may include holding a fracture in reduction. Preparing the bone may include identifying locations for obtaining access to an interior region of the bone. The apparatus may include structures outside the bone that interact with fragments of the bone. The structures may participate in the reduction. The structures may participate in holding the reduction. The structures may participate in identifying the locations.

CROSS-REFERENCE TO OTHER APPLICATIONS

This application is a divisional of U.S. patent application Ser. No.13/414,695, filed on Mar. 7, 2012, which is a nonprovisional of U.S.Provisional Application No. 61/450,112, which was filed on Mar. 7, 2011,both of which are hereby incorporated by reference herein in theirentireties.

FIELD OF TECHNOLOGY

Aspects of the disclosure relate to providing apparatus and methods forrepairing bone fractures. In particular, the disclosure relates toapparatus and methods for preparing a fractured bone for receiving atherapeutic implant.

BACKGROUND

Bone fracture fixation may involve the anchoring of bone fragments to arigid support that is outside or inside the bone. Typical supportsinclude (a) a plate that is screwed to the outside of the bone; and (b)an implant that is inserted inside the bone.

Therapeutic use of a support depends reducing the fracture and holdingthe reduction during administration of the support. Typically, aclinician inserts pins in the bone fragments and reduces the fracture bymoving anatomy adjacent the bone fractures directly with hands. Anotherclinician then braces the pins, in a procedure known as externalfixation, using wholly external pins that run between the inserted pins.The wholly external and internal pins are joined at junction membersthat are secured by set screws.

The use of direct manual reduction and bracing pins with junctionsoffers limited control over bone fragment positioning and may involvenumerous manual tasks that may be difficult to coordinate in such amanner that a reduction is efficiently achieved and properly held.

It would be desirable, therefore, to provide apparatus and methods forpreparing a fractured bone for repair.

BRIEF DESCRIPTION OF THE DRAWINGS

The objects and advantages of the invention will be apparent uponconsideration of the following detailed description, taken inconjunction with the accompanying drawings, in which like referencecharacters refer to like parts throughout, and in which:

FIG. 1 shows anatomy in connection with which the invention may bepracticed.

FIG. 2A shows a portion of the anatomy shown in FIG. 1.

FIG. 2B shows the anatomy shown in FIG. 2A along with descriptiveinformation.

FIG. 3A shows a partial cross-sectional view of the anatomy shown inFIG. 2A.

FIG. 3B shows apparatus in connection with which the invention may bepracticed.

FIG. 4 shows a procedure in connection with which the invention may bepracticed.

FIG. 5 shows another procedure, in connection with which the inventionmay be practiced, involving the anatomy shown in FIG. 2A and otheranatomy.

FIG. 6 shows anatomy similar to the anatomy shown in FIG. 2A, in adifferent condition from that shown in FIG. 2A, along with apparatus.

FIG. 7 shows schematic anatomy in connection with which the inventionmay be practiced.

FIG. 8 shows a portion of the anatomy shown in FIG. 1 in a differentstate from that shown in FIG. 1.

FIG. 9 shows the anatomy shown in FIG. 8 in a state that is differentfrom that shown in FIG. 8.

FIG. 10 shows illustrative apparatus in accordance with principles ofthe invention.

FIG. 11 shows other illustrative apparatus in accordance with principlesof the invention.

FIG. 12A shows the apparatus shown in FIG. 10 along with the anatomyshown in FIG. 8.

FIG. 12B shows a portion of the apparatus shown in FIG. 10.

FIG. 12C shows a cross-sectional view, taken along lines 12C-12C (shownin FIG. 10) of the apparatus shown in FIG. 10.

FIG. 13 shows still other apparatus in accordance with the principles ofthe invention.

FIG. 14 shows a portion of the apparatus shown in FIG. 13.

FIG. 15 shows a portion of the apparatus shown in FIG. 14.

FIG. 16 shows a portion of the apparatus shown in FIG. 15.

FIG. 17 shows a portion of the apparatus shown in FIG. 14.

FIG. 18 shows a cross-sectional view, taken along lines 18-18 (shown inFIG. 17) of the apparatus shown in FIG. 17.

FIG. 19 shows another portion of the apparatus shown in FIG. 13.

FIG. 20 shows a cross-sectional view, taken along lines 20-20 (shown inFIG. 13) of the apparatus shown in FIG. 13.

FIG. 21 shows yet other apparatus in accordance with the principles ofthe invention.

FIG. 22 shows a portion of the apparatus shown in FIG. 21.

FIG. 23 shows a cross-sectional view, taken along lines 23-23 (shown inFIG. 21) of the apparatus shown in FIG. 21.

FIG. 24 shows a portion of the apparatus shown in FIG. 21.

FIG. 25 shows a transparent view of a portion of the apparatus shown inFIG. 21.

FIG. 26 shows the apparatus of FIG. 13 along with anatomy shown in FIG.6.

FIG. 27 shows yet other apparatus in accordance with the principles ofthe invention along with a portion of the anatomy shown in FIG. 8.

FIG. 28 shows yet other apparatus in accordance with the principles ofthe invention.

FIG. 29 shows the apparatus of FIG. 28, along with other apparatus and aportion of the anatomy shown in FIG. 8.

FIG. 30 shows yet other apparatus in accordance with the principles ofthe invention along with apparatus shown in FIG. 27.

FIG. 31 shows information in accordance with the principles of theinvention.

FIG. 32 shows yet other apparatus in accordance with the principles ofthe invention.

FIG. 33 shows yet other apparatus in accordance with the principles ofthe invention.

FIG. 34 shows the apparatus of FIGS. 32 and 33.

FIG. 35 shows information in accordance with the principles of theinvention.

FIG. 36 shows yet other apparatus in accordance with the principles ofthe invention along with a portion of the anatomy shown in FIG. 8.

FIG. 37 shows yet other apparatus in accordance with the principles ofthe invention.

FIG. 38 shows yet other apparatus in accordance with the principles ofthe invention.

FIG. 39 shows yet other apparatus in accordance with the principles ofthe invention, along with anatomy.

FIG. 40 shows the apparatus and anatomy of FIG. 39, along with otherapparatus in accordance with the principles of the invention.

FIG. 41 shows yet other apparatus in accordance with the principles ofthe invention.

FIG. 42 shows a portion of the apparatus shown in FIG. 41.

FIG. 43 shows a portion of the apparatus shown in FIG. 42.

FIG. 44 shows a cross-sectional view, taken along lines 44-44 (shown inFIG. 42) of the apparatus shown in FIG. 42.

FIG. 45 shows the apparatus shown in FIG. 42 along with other apparatusin accordance with the principles of the invention.

FIG. 46 shows yet other apparatus in accordance with the principles ofthe invention.

FIG. 47 shows yet other apparatus in accordance with the principles ofthe invention.

FIG. 48A shows yet other apparatus in accordance with the principles ofthe invention, along with anatomy.

FIG. 48B shows yet other apparatus in accordance with the principles ofthe invention, along with anatomy.

FIG. 49 shows the apparatus of FIG. 48A in a configuration that isdifferent from that shown in FIG. 48A.

FIG. 50 shows a portion of the apparatus shown in FIG. 48A.

FIG. 51 shows yet other apparatus in accordance with the principles ofthe invention.

FIG. 52 shows yet other apparatus in accordance with the principles ofthe invention.

FIG. 53 shows a portion of the apparatus shown in FIG. 52, along withanatomy.

FIG. 54 shows a portion of the apparatus shown in FIG. 52, along withanatomy.

FIG. 55 shows a portion of the apparatus shown in FIG. 52, along withanatomy.

DETAILED DESCRIPTION

Apparatus and methods for preparing a fractured bone for therapy areprovided.

The bone may have one, two, three or more fragments. (A one-fragmentfractured bone may have a fracture that did not completely separate thebone into two or more fragments.) The bone may be repaired using animplant and one or more anchors to fasten the fragments to the implant.

Preparation of the bone for repair may include reduction of thefracture, holding the fracture in a reduced configuration, selecting asite for the implant in the bone interior, selecting a site for anaccess hole in the bone through which to deliver the implant to the boneinterior, opening the hole, clearing a cavity in the interior and anyother suitable steps. Apparatus and methods shown and described incommonly owned U.S. Patent Application Publications Nos.: US20090182336,US20110178520, US20110190832, US20110218626 and US20110218585, all ofwhich are hereby incorporated by reference herein in their entiretiesshow apparatus and methods that may be used in connection with some ofthe aforementioned steps.

Fracture reduction may involve translation and rotation of a bonefragment along and about orthogonal axes having an origin in thefragment. For example, a clinician may translate or rotate (or translateand rotate) a bone fragment relative to the axes to maneuver the bonefragment into a position in which the fragment can be anchored to theimplant. When the fragment is so positioned, the position may be fixedto prepare the fragment for anchoring to the implant.

The clinician may position the bone fragment without piercing the skinby manipulating anatomy.

The clinician may position the bone fragment using a bone penetratingmember. Some of the apparatus and methods may be used to do so. The bonepenetrating member may be elongated and have a first end that penetratesthe bone fragment and forms an interference fit therewith. The bonepenetrating member may have a second end that may be manipulated awayfrom the bone. The bone penetrating member may pierce the skin. The bonepenetrating member may penetrate bone from which skin has beendisplaced.

The clinician may fix a reduced position of a first bone fragmentrelative to a second bone fragment by securing the bone penetratingmember to the second bone fragment. The second bone fragment may benaturally engaged with anatomy, such as skeletal anatomy, such that thesecond bone fragment is relatively stable. The second bone fragment maybe used as a “reference” fragment for evaluating positioning, forexample of the first bone fragment, in connection with fracturereduction.

The first and second bone fragments may be manipulated, perhaps withcorresponding first and second bone penetrating members. The first andsecond bone penetrating members may be manipulated free of assistancefrom an exterior device. The first and second bone penetrating membersmay be manipulated in concert with external device. The external devicemay secure positions of the first and second bone penetrating members,relative to each other. The first and second bone penetrating members,when placed to transect one or more fractures, may fix the reducedpositions of the first and second fragments without mutual securement ofthe first and second bone penetrating members.

The external device may support one or more other external devices forselecting a site for the implant in the bone interior, selecting a sitefor an access hole in the bone through which to deliver the implant tothe bone interior, opening the hole, clearing a cavity in the interior,deploying the implant and any other suitable steps or procedures.Surgical tools that may be used in connection with these steps mayinclude saws, drills, wires, broaches and any other suitable surgicaltools.

The apparatus may include, and the methods may involve, the externaldevice.

The apparatus may include exclusively radiolucent materials. Theapparatus may include exclusively radiopaque materials. The apparatusmay include both radiolucent and radiopaque materials.

In some embodiments, the apparatus may include, and the methods mayinvolve, apparatus for reducing a fracture of a bone. The apparatus mayinclude a first bone penetrating element. The apparatus may include asecond bone penetrating element. The apparatus may include a bridgingelement. The bridging element may be deployed external to the bone. Thebridging element may be configured to receive the first bone penetratingelement and the second bone penetrating element. The apparatus mayinclude a retention mechanism that is configured to retain a firstposition, relative to the bridging element, of the first bonepenetrating element and a second position, relative to the bridgingelement, of the second bone penetrating element.

The retention mechanism may include an elongated pressure distributionmember that is configured to apply pressure to the first bonepenetrating element and the second bone penetrating element. Thepressure distribution member may retain the first bone penetratingelement in the first position and the second bone penetrating element inthe second position.

The apparatus may include a fixation mechanism that is configured todeliver pressure to a portion of the pressure distribution member suchthat the pressure distribution member retains the first bone penetratingelement in the first position and the second bone penetrating element inthe second position.

The fixation mechanism may include a set screw.

The apparatus may include a third bone penetrating member and a base.The third bone penetrating member may be configured to engage the basewith a reference bone fragment. The first bone penetrating member may beconfigured to position a first bone fragment relative to the referencebone fragment.

The base may include a collar that is configured to receive the thirdbone penetrating member.

The apparatus may include an elevation lock for fixing an elevation ofthe base relative to the bone.

The apparatus may include a length lock for fixing a length between thebridging member and the collar.

The second bone penetrating member may be configured to position asecond bone fragment relative to the reference bone fragment.

The apparatus may include a support that is configured to rigidly jointhe base to the bridging element. The support may define a recess forelectromagnetic imaging of the bone and attendant apparatus. A portionof the recess may substantially coincide with a longitudinal axis of thebone.

The apparatus may include a hinge that joins the support to the bridgingelement. The apparatus may include a hinge lock that is configured tofix the bridging member at an oblique angle to the support.

The apparatus may include a unitary frame. The frame may include a firstreceptacle for receiving a first bone penetrating element; a secondreceptacle for receiving a second bone penetrating element; and a thirdreceptacle for receiving a third bone penetrating element.

The first and second bone penetrating elements may be configured to movefirst and second bone fragments, respectively, relative to a third bonefragment that corresponds to the third bone penetrating element. Thefirst receptacle and the second receptacle may define a first ray thatoriginates at the first receptacle. The first receptacle and the thirdreceptacle may define a second ray that originates at the firstreceptacle; and the first and second rays define an acute angle.

The angle may range from about 40° to about 89°. The angle may rangefrom about 45° to about 80°. The angle may range from about 55° to about75°.

The first receptacle and the second receptacle may correspond to firstand second anatomical half-spaces of the bone, the first anatomicalhalf-space being separated by a plane that substantially bisects thebone. The first anatomical half-space may be an anterior half-space andthe second anatomical half-space may be a posterior half-space. Thefirst anatomical half-space may be a volar half-space; and the secondanatomical half-space may be a dorsal half-space. The first anatomicalhalf-space may be a medial half-space; and the second anatomicalhalf-space may be a lateral half-space.

Anatomical planes, or view planes, such as anterior-posterior andmedial-lateral, may be instructive for illustrating the apparatus andmethods. It will be understood that the anterior-posterior plane is aplane that is normal to an axis running from anterior to posterior in ananatomical feature. It will be understood that the medial-lateral planeis a plane that is normal to an axis running from medial to lateral inan anatomical feature.

The third receptacle may correspond to a plane that substantiallybisects the bone and defines first and second anatomical half-spaces ofthe bone. The first anatomical half-space may be an anterior half-space;and the second anatomical half-space may be a posterior half-space.

The first anatomical half-space may be a volar half-space; and thesecond anatomical half-space may be a dorsal half-space. The firstanatomical half-space may be a medial half-space; and the secondanatomical half-space may be a lateral half-space.

The methods may include a method for reducing a fracture. The method mayinclude inserting a first bone penetrating member in a first bonefragment; inserting a second bone penetrating member in a second bonefragment; and distributing a locking force from an actuator to the firstbone penetrating member and the second bone penetrating member to lockthe first bone penetrating member and the second bone penetrating memberto a bridging member that spans from the first bone penetrating memberto the second bone penetrating member.

The method may include rotating the bridging member to an oblique anglerelative to a longitudinal axis of a reference bone fragment. The anglemay be a radial inclination.

The method may include fixing the bridging member at the oblique angleby pinning a base to the reference fragment. The base may be rigidlyjoined to the bridging member.

The method may include adjusting an elevation, relative to a referencebone fragment, of a base to rotate the first and second bone fragmentsto an angle relative to the reference bone fragment. The angle may be avolar tilt. The method may include fixing the elevation to fix theangle.

The method may include adjusting a position, relative to a base, of athird bone penetrating member that is engaged with a reference bonefragment, to adjust a distance between (a) the first and second bonefragments; and (b) the reference bone fragment.

The distance may correspond to a radial height.

The method may include fixing a position of a collar relative to thebase to fix the distance.

The method may include fixing the bridging member relative to areference bone using a rigid radiopaque support having a recess; andimaging an interior of the bone via the recess.

The apparatus may include a base that is configured to be secured to afirst bone fragment; and a bone fragment manipulator. The bone fragmentmanipulator may be in mechanical communication with the base. The bonefragment manipulator may be configured to: be rigidly engaged with asecond bone fragment; displace the second bone fragment along threeorthogonal axes; and rotate the bone second bone fragment along each ofthe three orthogonal axes.

The apparatus may include a pressure source that is configured to fixthe manipulator to substantially prevent: displacement of the secondbone fragment along the three orthogonal axes; and rotation of thesecond bone fragment about the three orthogonal axes.

The bone fragment manipulator may include an elongated bone penetratingmember; and a collar configured to receive the elongated bonepenetrating member. The bone fragment manipulator may include a pressuresource that is configured to lock the bone penetrating member relativeto the collar. The bone fragment manipulator may include a collarsupport that is configured to translate in: a first direction; and asecond direction that is orthogonal to the first direction. The bonefragment manipulator may include a pressure source that is configured tolock the collar relative to the collar support.

The bone fragment manipulator may include a pressure source that isconfigured to lock the collar support relative to the base.

The pressure source may be configured to lock the collar relative to thecollar support. The pressure source may be configured to lock the collarsupport relative to the base.

The pressure source may be a first pressure source. The apparatus mayinclude a second pressure source that is configured to lock the collarsupport relative to the base.

The collar may include a collet. The collet may include an articulatingsurface that articulates relative to the collar support. The pressuresource may include a thread of the collet. The articulating surface mayinclude a substantially spherical curvature.

The collet may include a cannulated body for receiving the elongatedbone penetrating member. The cannulated body may include outer threads.The cannulated body may include retention fingers. The retention fingersmay be configured to retain the elongated bone penetrating member. Thecannulated body may include a tapered form for receiving the cannulatedbody and compressing the retention fingers against the elongated bonepenetrating member. The cannulated body may include a female threadedmember for engaging the outer threads and directing the cannulated bodyinto the tapered form.

The female threaded member may include a first curved articulatingsurface for articulating against the collar support. The tapered formmay include a second curved articulating surface for articulatingagainst the collar support. The tapered form may include expansionmembers that are configured to engage the collar support in response toengagement of the elongated bone penetrating member by the retentionfingers.

The apparatus may include a detent that limits rotational displacement,relative to the collar support, of the tapered form. The detent mayinclude a pin that extends from the tapered form and is configured tointerfere with the collar support.

The female threaded member and the tapered form may be configured to bedisplaced from each other by force of the retention fingers against theform.

The collar support may include an upper plate and a lower plate.Displacement of the female threaded member from the tapered form maydisplace the upper plate from the lower plate.

The base may include a frame that is configured to limit displacement ofthe upper plate from the lower plate.

The collet may lock the elongated bone penetrating member by applyingpressure: (a) through the female threaded member and the tapered form tothe collar support; and (b) through the collar support to the frame.

The bone fragment manipulator may be a first bone-fragment-manipulatorand the three orthogonal axes may correspond to the second bonefragment. The apparatus may include a second bone fragment manipulatorthat is in mechanical communication with the base. The second bonefragment manipulator may be configured to: be rigidly engaged with athird bone fragment; displace the third bone fragment along threeorthogonal axes that correspond to the third bone fragment; and rotatethe third bone fragment along each of the three orthogonal axes.

The apparatus may include a malleable frame; a first collar that isfixed to the frame and configured to receive a first elongated bonepenetrating member; and a second collar that is fixed to the frame andconfigured to receive a second elongated bone penetrating member. Themalleable frame may be configured to retain a position of the secondelongated bone penetrating member relative to the first elongated bonepenetrating member.

The apparatus may include a first control handle that is rigidly coupledto the first collar; and a second control handle that is rigidly coupledto the second collar. The second control handle may be configured tomove the second collar from a first position relative to the firstcollar to a second position relative to the first collar.

The first control handle, in use, may be coupled to the first collar andmay be, after use, removable from the first collar. The second controlhandle, in use, may be coupled to the second collar and may be, afteruse, removable from the second collar.

The first collar may include a first pressure source that is configuredto lock the first elongated bone penetrating member relative to thefirst collar; and the second collar may include a second pressure sourcethat is configured to lock the second elongated bone penetrating memberrelative to the second collar.

The apparatus may include: a first support configured to support firstsoft tissue that corresponds to a first bone fragment; a second supportconfigured to support second soft tissue that corresponds to a secondbone fragment, the second support articulating with respect to the firstsupport via a joint; and a lock that is configured to fix the joint toset an angle between the first support and the second support.

The apparatus may include a first bracing element that braces the firstsoft tissue to the first support; and a second bracing element thatbraces the second soft tissue to the second support.

The second bracing element may be configured to apply tension to thesecond soft tissue to displace the second bone fragment away from thefirst bone fragment.

The second bracing element may include a soft tissue grasper. The softtissue grasper may be configured to apply increasing traction to thesoft tissue as a displacement of the second bone fragment away from thefirst bone fragment increases.

In some embodiments, the apparatus may include, and the methods mayinvolve, apparatus for positioning a surgical tool relative to a siteinterior to a fractured bone.

The apparatus may include a pin configured to penetrate a fragment ofthe bone; and a support that is configured to articulate relative to thepin and indicate an access point that corresponds to the site.

The support may include a concave surface for articulating against thepin. The support may include an indicator for indicating the accesspoint. The support may include a cannulated fixture that is configuredto receive the pin, the cannulated fixture including a concave surface.

The support may include a curvature that is configured to span from afirst anatomical aspect of the bone to a second anatomical aspect of thebone. The first and second anatomical aspects may be normal to eachother.

The first anatomical aspect may be an anterior aspect and the secondanatomical aspect may be a medial aspect. The first anatomical aspectmay be an anterior aspect and the second anatomical aspect may be alateral aspect.

The first anatomical aspect may be a posterior aspect and the secondanatomical aspect may be a medial aspect. The first anatomical aspectmay be a posterior aspect and the second anatomical aspect may be alateral aspect.

The first anatomical aspect may be a dorsal aspect and the secondanatomical aspect may be a medial aspect. The first anatomical aspectmay be a dorsal aspect and the second anatomical aspect may be a lateralaspect.

The first anatomical aspect may be a volar aspect and the secondanatomical aspect may be a medial aspect.

The first anatomical aspect may be a volar aspect and the secondanatomical aspect may be a lateral aspect.

The bone fragment may be a first bone fragment. The pin may be fixed toa jig that retains the first bone fragment in a reduced orientationrelative to a second bone fragment. The pin and the support, whenmutually engaged, may define a spherical surface. The pin may lie alonga radius of the spherical surface. The pin may include a tip thatsubstantially coincides with the geometric center of the sphericalsurface. The support may be configured such that the access point islocated at an intersection of the spherical surface and soft tissueadjacent the bone.

The pin may include a detent that defines a maximum penetration depth ofthe pin into the bone fragment. The pin may include a detent thatdefines a minimum elevation, relative to the bone fragment, of thesupport when the support and the pin are engaged. The detents, together,may function like a vertical spacer.

The support may include a fixture that is configured to engage the pin;and an extension that is configured to extend, away from the fixture,along a spherical trajectory, until it contacts soft tissue adjacent thebone.

The extension may include an indicator that indicates the access pointwhen the indicator is proximate the bone. The indicator may extend awayfrom the extension in a direction that is orthogonal to the sphericaltrajectory.

The apparatus may include an elongated guide that has an end and a guidesurface. The guide may be in mechanical coordination with the supportsuch that the guide end corresponds to the access point and the guidesurface is oriented to align a surgical tool with the site.

The surgical tool may be a drill, a saw, a rotary drill, a rotary saw, ak-wire, or any other suitable surgical tool. The tool may be used toinitiate a hole adjacent the guide surface at the access point. The toolmay be inserted into or through a cortical layer of bone. After the holeis initiated, the tool may be rotated away from its primary axis ofrotation to orient the hole along a direction that leads to a site fordeployment of an implant.

The pin may include a penetrating end that is configured to be placed inthe bone fragment. The support may be configured to orient the guidesuch that the guide surface is oriented to align the surgical tool withthe penetrating end.

The apparatus may include a first radiopaque target on a first targetarm. The apparatus may include a second radiopaque target on a secondtarget arm. The site and the access point may define a guide axis. Thefirst target arm may be in mechanical communication with the pin. Thesecond target arm may be in mechanical communication with the pin. Thefirst target arm may be configured to support the first target at afirst distance along a first direction away from the guide axis. Thesecond target arm may be configured to support the second target at asecond distance along a second direction away from the guide axis. Thesecond direction may be substantially perpendicular to the firstdirection.

The first direction and the second direction may define a plane thatintersects the site.

In some embodiments, the apparatus may include, and the methods mayinvolve, apparatus for provisionally reducing and holding reduced a bonefracture comprising. The apparatus may include a mechanism to hold bonefragments stable relative to a stable part of the bone. The stable partof the bone may be a bone fragment. The stable part of the bone may benaturally engaged with the skeleton. The stable part of the bone may benaturally engaged with the skeleton at a joint.

The apparatus may include alignment features to position an implant forthe inside of the bone. The implant may be an intramedullary implant.The apparatus may include a tissue protector. The apparatus may includea guide sleeve to direct access to the bone. The apparatus may include aguide sleeve to direct positioning of the implant on the inside of thebone.

The apparatus may include a non joint spanning attachment mechanism. Theapparatus may include a joint spanning attachment mechanism.

The apparatus may include a positioning system that is configured totemplate an implant. The template may be aligned with a site for theimplant. The positioning system may be registered to the template toposition surgical apparatus for accessing the site.

The positioning system may be registered to a positioned K-wire.

The positioning system may be configured to place bone fragment screwsor anchors in the bone fragment and into the intramedullary implant.

The apparatus may include a mechanism that allows the fragments to bemanipulated in position relative to the stable bone in a controlledmanner and locked into desired position.

The apparatus may include a mechanism that allows the fragments to bemanipulated in position relative to the stable bone and relative toother bone fragments in a controlled manner and locked into a desiredposition.

The apparatus may be configured to allow, while holding the reduction,an implant to be placed into the bone without obstructing an access pathor a position of the implant.

In some embodiments, the apparatus may include, and the methods mayinvolve, apparatus for positioning an access hole in a bone. The accesshole may be used for delivery of an implant to a site in an interiorcavity of the bone. The apparatus may include a first member that isconfigured to be registered to the site in a first anatomical viewingplane; and a second member that is attached to the first member. Whenthe second member is brought into contact with tissue in a secondanatomical viewing plane that is substantially orthogonal to the firstanatomical viewing plane, the second member identifies a point on thetissue and a direction that leads from that point to the site. Thetissue may include hard tissue, such as bone. The tissue may includesoft tissue, such as skin and connective tissue or muscle.

The first member may include a radiopaque target for registering thefirst member to the site.

The first member may include a pivot end that rotatably supports aframe. The frame may include a receptacle for receiving a bonepenetrating member. The bone penetrating member may be configured toaffix the frame to a bone fragment of the bone. The first member mayinclude a pressure source that is configured to fix the first memberrelative to the frame.

The apparatus may include a strut that spans from the first anatomicalview to the second anatomical view. The first member and the secondmember may be elongated. The first member may, away from the pivot end,support the strut. The strut may support the second member. The strutmay rotatably support the second member. The strut may lockably supportthe second member.

When the first member and the second member are parallel, the secondmember may be shorter than the first member by a length that correspondsto: (a) a length of the implant; and (b) a distance between an end ofthe second member and an end of the site.

The second member may include a guide tube. The guide tube may be usedto guide the surgical tool to a location in the interior of the bone.

The second member may have a base adjacent a distal opening of the guidetube. The base may be configured to contact an outer surface of thebone.

The base may include a contact that is configured to grip the surface toprevent translation of the base relative to the surface.

The contact may be a first contact. The apparatus may include a secondcontact that is configured to grip the surface to prevent, in concertwith the first contact, rotation of the base relative to the surface.

The base may include a first alignment member extending from a firstside of the base and a second alignment member extending from a secondside of the base opposite the first side. The alignment members may beconfigured to tangentially engage opposing surfaces of the bone to alignthe guide tube with a longitudinal axis of the bone.

The base may include a first lateral cleat extending from a first sideof the base and a second lateral cleat extending from a second side ofthe base opposite the first side. The lateral cleats may be configuredto grip opposing surfaces of the bone to prevent the base from rotatingcircumferentially about a longitudinal axis of the bone.

The base may include a receptacle for a bone penetrating member suchthat the bone penetrating member engages the base with the bone. Thereceptacle may be a first receptacle and the bone penetrating member maybe a second bone penetrating member. The base may include a secondreceptacle for a second bone penetrating member such that the secondbone penetrating member engages the base with the bone. The first andsecond receptacles may be skewed to cause the first and second bonepenetrating members to fix the base to the bone by a toenailarrangement.

The apparatus may include a first radiopaque target for registering thepivot end of the first member to the site. The apparatus may include asecond radiopaque target for registering the base to the site. Thesecond radiopaque target may extend from the base. The second radiopaquetarget may lie substantially in the second anatomical view plane.

The apparatus may include a bone penetrating member guide. The bonepenetrating member guide may be supported by the base. The bonepenetrating member guide may be aligned with the guide tube. The framemay be configured to fix a first bone fragment to a second bonefragment. The base may be configured to contact the first bone fragment.The bone penetrating member guide may be configured to direct a bonepenetrating member through the second bone fragment into the implant toanchor the second bone fragment to the implant.

In some embodiments, the apparatus may include, and the methods mayinvolve, apparatus that includes a pointer that corresponds to firstsites on a bone that are spaced a substantially uniform distance from aninternal point in the bone. The internal point may correspond to alocation for a bone implant. The apparatus may include an engagementelement that extends away from the pointer. The engagement element maybe configured to rotate about a pin that is fixed relative to the boneand oriented at an angle to the bone. A change in the angle may causethe pointer to correspond to second sites on the bone. The second sitesmay be different from the first sites and may be spaced apart from theinternal point by the substantially uniform distance.

The substantially uniform distance may correspond to a length of theimplant.

The apparatus may include a pointer that corresponds to sites on a bonethat are spaced a substantially uniform distance from an internal pointin the bone. The internal point may correspond to a location for a boneimplant. The apparatus may include an engagement element that extendsaway from the pointer. The engagement element may be configured torotate about a pin that is fixed relative to the bone. The substantiallyuniform distance may be independent of the angle at which the pin isfixed to the bone.

In some embodiments, the apparatus may include, and the methods mayinvolve, apparatus for positioning orthopedic tools outside a bone neara site inside the bone. The apparatus may include a tool bracketdefining three orthogonal axes. The tool bracket may be translatablealong one or more of the axes. The tool bracket may be rotatable aboutone or more of the axes. The apparatus may include a support assembly.The support assembly may include a platform that is configured to bepositioned away from the bone and engaged with a fragment of the bone.The apparatus may include an adjustment boom that connects the platformto the tool bracket.

The support assembly may be configured to support the tool bracketoutside the bone, near the site. The support assembly may provide to thetool bracket translation along, and rotational about, one or more of thethree axes.

The adjustment boom may include a housing. The adjustment boom mayinclude a first rod that extends from the housing to a first ball jointin the tool bracket. The adjustment boom may include a second rod thatextends from a second ball joint in the housing to a bore in theplatform.

The housing may be translatable and rotatable, relative to the platform,via the second rod.

The apparatus may include a radiopaque target that is configured toattach to the tool bracket for registering the tool bracket to the siteusing medical imaging.

The apparatus may include a guide tube. The guide tube may include afixture that is configured to be attached to the tool bracket in anorientation. The guide tube may include a cannula. The cannula may bealigned with an axis of the site, based on the orientation. The guidetube may be configured to guide a rotary surgical tool to the site.

The apparatus may include a bone penetrating member guide. The bonepenetrating member guide may include a fixture that is configured to beattached to the tool bracket in an orientation. The bone penetratingmember guide may include a guide passageway that is aligned with an axisof the site based on the orientation. When the bone fragment is a firstbone fragment, the guide passageway may be configured to direct a bonepenetrating member through a second bone fragment into the implant toanchor the second bone fragment to the implant.

In some embodiments, the apparatus and methods may be used inconjunction with a bone penetrating member that includes a verticalspacer. The vertical spacer may be used set a height from a bone toapparatus shown and described herein. For example, using two or moresuch spacers, a jig or frame could be supported at a desired uniform ornonuniform height above the bone.

The vertical spacer may provide structural stability to the bonepenetrating member without increasing the overall diameter of the bonepenetrating member.

In some embodiments, the apparatus and methods may be used inconjunction with a bone penetrating member that includes a penetrationlimiter. The penetration limiter may be used to prevent penetration ofbone or other tissue that for which penetration is not desired.

In some embodiments, a distal end of a bone penetrating member mayinclude a tissue engagement feature such as threads, one or more ridges,one or more ribs or one or more barbs to increase the strength ofengagement between the bone penetrating member and the bone. This mayincrease the amount of force that can be imparted by the bonepenetrating member to the bone.

Apparatus and methods in accordance with the invention will now bedescribed in connection with the FIGS. The features are illustrated inthe context of selected embodiments. It will be understood that featuresshown in connection with one of the embodiments may be practiced inaccordance with the principles of the invention along with featuresshown in connection with others of the embodiments.

Apparatus and methods described herein are illustrative. Apparatus andmethods of the invention may involve some or all of the features of theillustrative apparatus and/or some or all of the steps of theillustrative methods. The steps of the methods may be performed in anorder other than the order shown and described herein. Some embodimentsmay omit steps shown and described in connection with the illustrativemethods. Some embodiments may include steps that are not shown anddescribed in connection with the illustrative methods.

The apparatus and methods of the invention will be described inconnection with embodiments and features of an illustrative bone repairdevices and associated hardware and instrumentation. The device andassociated hardware and instruments will be described now with referenceto the FIGS. It is to be understood that other embodiments may beutilized and structural, functional and procedural modifications may bemade without departing from the scope and spirit of the presentinvention.

FIG. 1 shows illustrative skeleton S. Skeleton S includes illustrativebones Si in which apparatus and methods in accordance with theprinciples of the invention may be used. Table 1 includes a partial listof bones Si.

TABLE 1 Bones S_(i). Reference numeral in Bone FIG. 1 Distal Radius S₀Humerus S₁ Proximal Radius and Ulna (Elbow) S₂ Metacarpals S₃ ClavicleS₄ Ribs S₅ Vertebrae S₆ Ulna S₇ Hip S₈ Femur S₉ Tibia S₁₀ Fibula S₁₁Metatarsals S₁₂

FIG. 2A schematically shows anatomy of bone B that may be a bone Si.Anatomical features of bone B are listed in Table 2. Apparatus andmethods in accordance with the principles of the invention may involveone or more of the anatomical features shown in Table 3. Features ofbone B may be described in reference to bone axis LB (in which Bindicates bone) and radius RB (in which B indicates bone).

TABLE 2 Anatomical features of some of the bone types that may betreated by the apparatus and methods. Reference numeral Anatomicalfeature in FIG. 2A Articular surface B₀ Cancellous, spongy or trabecularbone B₁ Medullary cavity B₂ Cortical or dense bone B₃ Periosteum B₄Proximal articular surface B₅ Diaphysis or midshaft B₆ Metaphysis or endregion B₇ Epiphysis B₈ Articular surface B₉

The terms “end-bone” and “end-bone fracture” may be used to refer tofractures that occur in the epiphyseal or metaphyseal region of longbones. Such fractures include peri-articular and intra-articularfractures.

FIG. 2B illustrates anatomical features of bone B. Bone B may besubstantially bisected by plane 200. Plane 200 may include half-spaces205 and 207. Bone B may be substantially bisected by plane 202. Plane202 may include half-spaces 203 and 209. Half-spaces 203, 205, 207 or209 may correspond to a dorsal, anterior, posterior, volar, medial orlateral half space. A designation of half-spaces 203, 205, 207 or 209may be based on an orientation of bone B in skeleton S (shown in FIG.1).

FIG. 3A illustrates anatomical features of a fractured bone B. Referenceframe 300 shows that the view of bone B is substantially inanterior/posterior plane 302. Anterior/posterior plane 302 includes amedial half-space MED and a lateral half-space LAT. Medial/lateral plane304 includes volar half-space VOL and dorsal half-space DOR.

Bone B is illustrated as a radius that is fractured at fractures Fh andFa. Bone B includes bone segments Pb, Ph and Pa in distal end D. Bonesegment Pb is the largest portion of bone B. Bone segment Ph is a headportion of bone B. Bone segments Ph and Pa include articular surface AS.Bone segment Pa includes a portion of articular surface AS. Boneportions Pb, Ph and Pa are separated or partially separated alongfractures Fa and Fh. Fracture Fa transects articular surface AS.Fracture Fh transects the head portion of bone B.

Bone B, shown in a cross section that includes approximate longitudinalaxis LB, includes cortical bone BCO and cancellous bone BCA. Deploymentof an implant into distal end D of bone B may require an access hole atsite H′. Although H′ is illustrated as being located on a radial aspectof bone B, H′ may be located on other aspects of bone B, such as avolar, dorsal, lateral, medial or posterior aspect of bone B. Deploymentof the implant may require displacement of cancellous bone BCA.Illustrative contours C1, C2 and C3 in cancellous bone BCA are differentcontours within which cancellous bone BCA may be displaced. Contour C4,which is a projection of contour C3 onto articular surface AS, showsthat contour C4, for example, may be asymmetric. Contour C4 may havemajor axis A1 and minor axis A2 (shown in half). The other contours mayalso be asymmetric.

Apparatus and methods provided herein may indicate and provide an accesshole H at site H′. An apparatus inserted at site H′ through access holeH, may travel a distance XH through intramedullary space IS to reach thehead portion of bone B. An apparatus inserted at site I′ through accesshole I may travel a distance XI through intramedullary space IS to reacha head portion of bone B. An apparatus inserted at H′ may require a“bend” to travel through intramedullary space IS to reach a head portionof bone B. An apparatus inserted at I′ may not require a “bend” to reacha head portion of bone B. Apparatus and methods provided herein maydisplace cancellous bone BCA within a contour such as C1, C2 or C3.

FIG. 3B shows illustrative implant 300. Implant 300 may be implanted inbone B. Implant 300 may be configured to maintain a reduction offractures Fa and Fh.

Implant 300 may be positioned at a site interior to bone B. Implant 300may be positioned within intramedullary space IS (shown in FIG. 3A).Implant 300 may be inserted through access hole I. Implant 300 may beinserted through access hole H.

Implant 300 may be implanted in a bone (not shown). Implant 300 iselongated along its longitudinal axis LI (in which I indicates implant).Implant 300 may include an outer expandable web 306. Implant 300 mayinclude an inner expandable web 308. Expandable web 306 may be expandedto a radial distance from LI. Expandable web 308 may be expanded to aradial distance from LI.

Expandable web 306 may extend from proximal base 330 to distal hub 310.(“Distal,” relative to “proximal,” generally means the leading end of anapparatus that is inserted, or is to be inserted, in the body.)Expandable web 308 may extend from a proximal base (not shown) to distalhub 320.

Expandable web 306 may include an arrangement of cells 322. Expandableweb 308 may include an arrangement of cells 324. An arrangement of cells322 and/or cells 324 may be any suitable arrangement and may include anarrangement that provides different zones of flexibility.

Cell 322 may be configured to expand. Cell 324 may be configured toexpand. Cell 322 may be expanded by expansion of expandable web 306.Cell 324 may be expanded by expansion of expandable web 308.

Cell 322 may be configured to receive any suitable anchor, such asanchor 326 or anchor 329. Cell 324 may be configured to receive anysuitable anchor such as anchor 326 or anchor 329. Anchors 326 and 329may be configured to penetrate expandable web 306 and/or expandable web308. Anchors 326 and 329 may penetrate expandable web 306 and/orexpandable web 308 at two or more locations.

Anchors 326 or 329 that may be configured to secure a bone segment tothe expandable web when the expandable web is inside the bone.

Implant 300 may include component 328. Component 328 may extendlongitudinally along axis LI. Component 328 may extend between distalhub 310 and proximal hub 330.

FIG. 4 shows illustrative therapeutic scenario 400. In scenario 400,manual traction techniques are applied to reestablish anatomic reductionin fracture Fp in bone B.

Provisional or temporary reduction is often undertaken in fracturerepair to restore bone segments to their normal positions before theyare anchored.

When the number of bone segments is small and/or the dislocation of thebone segments is modest, closed reduction techniques may be employed.Closed reduction does not include incisions and utilizes traction. Thetraction may utilize different tension, compression, and bending motionsfor reestablishing normal bone segment positioning.

For more displaced fracture patterns, a limited open reduction can beutilized. External probes, special clamps or bone penetrating members,such as wires, can be employed for the provisional reduction. Smallincisions can be made allowing the probes and clamps to aid inrepositioning the fracture segments. An open reduction may be performedin a surgical environment.

The wires may include metal, polymer, fiber or any other suitablematerial. The wires may be k-wires. The k-wires may range in diameterfrom about 1 mm to about 2 mm in diameter. The k-wires may have pointedfaceted tips to facilitate insertion in a bone using a surgical drill.The k-wires may be driven across a fracture from bone fragment to bonefragment to retain the fragments in position relative to each other. Thek-wires may be positioned and then removed strategically to facilitatethe reduction procedure in a manner that reduces interference with bonecavity preparation or implant deployment.

A k-wire may be inserted into a bone segment without surgically openingthe skin. A k-wire may be drilled directly through the skin and into thebone segment. A clinician may manipulate the bone segment via thek-wire. Once the bone segments are in position, k-wires may further beutilized to maintain the reduction.

FIG. 5 shows portion 500 of an illustrative surgical environment inwhich a fracture in bone B may be diagnosed and treated utilizing atherapeutic technique. Patient P may be sedated appropriately. A limbnerve block may be administered. A pressure cuff (not shown) may be usedto maintain limb Q in a relatively blood-free state. Limb Q may besupported by procedure table 502 and any other appropriate supports tomanage the position of bone B during surgery. Environment 500 mayinclude imaging system 504. Imaging system 504 may be an electromagneticimaging system. Apparatus and methods provided herein may allowobstruction-free imaging of the fracture in bone B. Imaging system 504may show a position of one or more of a bone fragment, a jig, a target,a marker or any suitable radiopaque device.

FIG. 6 shows illustrative therapeutic scenario 600. In scenario 600, alimited open reduction technique is utilized to reestablish anatomicreduction in fractures Fh and Fa in bone B. K-wire 601 may be drilledacross fracture Fh. K-Wire 601 may maintain bone fragment Pa is aposition relative to bone segment Pb. K-wire 603 may be drilled acrossfracture Fa. K-wire 603 may maintain bone segment Ph in a positionrelative to bone segment Pb. K-wire 603 may be drilled at an angle thatsubstantially follows a subchrondral surface of bone B or any othersuitable anatomical characteristic of bone B.

K-wires 601 and 603 may be drilled across fracture Fh and fracture Fa.K-wires 603 and 601 may maintain bone segments Pa and Ph in positionsrelative to bone segment Pb. Bone segment Pb may be a reference bonesegment. Bone segment Pb may be a diaphysis or midshaft region of boneB. K-wires 601 and 603 may provisionally position bone segments Pa andPh relative to bone segment Pb. K-wires may be manipulated to positionbone segments Pb and Pa in a variety of therapeutic positions relativeto bone segment Pb.

FIG. 7 shows illustrative bone segments 700 of bone B. Bone segment Pbmay be the largest bone segment. A fracture, such as fracture Fh orfracture Fa (shown in FIG. 3A), may allow bone segments Pa or Ph toshift out of anatomic alignment with respect to bone segment Pb. Bonesegment Pb may serve as a reference bone segment, such that, fortherapeutic treatment, one or more bone segments such as Pa and Ph maybe positioned relative to the reference bone segment.

The fracture may allow bone segment Ph to be displaced along one or moreof orthogonal axes x1, y1 and z1, centered at O1. The fracture may allowbone segment Ph to rotate about one or more of the axes centered at O1.The fracture may allow bone segment Pa to be displaced along one or moreof orthogonal axes x2, y2, and z2, centered at O2. The fracture mayallow bone segment Pa to rotate about one or more of the axes centeredat O2.

A bone-penetrating member may be inserted into bone segment Ph at a sitesuch as 709. The bone penetrating member may allow a clinician to movePh along or about one or more of axes x1, y1, and z1. A bone penetratingmember may be drilled into bone segment Pa at a site such as 711. Thebone penetrating member may allow a clinician to move Pa along or aboutone or more of axes x2, y2, and z2.

Bone penetrating members may be inserted in Pb at one or more sites suchas 713 and 715. The bone penetrating members may anchor a device to bonesegment Pb. The device may hold a position of one or both of Pa and Phrelative to segment Pb. The device may move one or both of Pa and Phrelative to segment Pb.

FIG. 8 shows illustrative anatomy 800. Anatomy 800 includes a dorsalview of radius R and ulna U. Soft tissue S may be present around radiusR and ulna U. Radius R and ulna U are shown in substantiallyvolar/dorsal plane 304 (shown in FIG. 3A). Radius R includes fractureFh. Fracture Fh may separate segment Bs from radius R. Radius R mayinclude facture Fa (shown in FIG. 3A). Fracture Fa may separate segmentBs into segments Pa and Ph (shown in FIG. 3A). Displacement of Bs mayinclude movement of Bs to an abnormal position relative to radius R orulna U.

Segment Bs may normally be positioned at radial height Rh. Radial heightRh may be measured based on a distance between illustrative lines L3 andL4. Line L3 is drawn from a radial styloid and perpendicular to alongitudinal axis of radius R. Line L4 is drawn from an articularsurface of radius R and perpendicular to a longitudinal axis of radiusR. A normal radial height may range between 10-13 mm. Radial height Rhmay be measured relative to an anatomical characteristic of ulna U. Bonesegment Bs may be positioned at an abnormal radial height.

Radial inclination α may be an inclination, substantially in plane 302(shown in FIG. 3A), between articular surface As and transverse planePt. Transverse plane Pt is normal to projection L2 of the longitudinalaxis of radius R. α in a typical, unbroken bone may range from about 7°to about 37°. The apparatus and methods may be used to change α for oneor more bone segments such as bone segments Pa and Ph (shown in FIG.3A).

FIG. 9 shows anatomy 900. Anatomy 900 shows a lateral view of radius Rand ulna U. Radius R and ulna U are shown in substantiallymedial/lateral plane 302 (shown in FIG. 3A). Volar tilt λ may be aninclination, substantially in plane 304 (shown in FIG. 3A), betweenarticular surface As and transverse plane Pt (shown in a position thatis different from the position shown in FIG. 8). (Volar tilt may begiven by the complement of λ, represented in the FIG. by δ, the anglebetween articular surface As and the longitudinal axis of the radius,LR.) The apparatus and methods may be used to change λ for one or morebone segments such as bone segments Pa and Ph (shown in FIG. 3A).

FIG. 10 shows illustrative jig 1000. Bone penetrating element 1001 maybe drilled into bone B (shown in FIG. 2A). Bone penetrating element 1001may be a k-wire. Bone penetrating element 1001 may be positioned in boneB relative to an anatomical landmark. Bone penetrating element 1001 maybe inserted in a dorsal surface of bone B.

Jig 1000 may include bridging element 1005. Bridging element 1005 mayinclude receptacles 1003. Receptacles 1003 may be configured to receivebone penetrating element 1001. Receptacles 1003 may be configured toreceive bone penetrating element 1007. Bridging member 1005 may positionbone penetrating element 1001 relative to bone penetrating element 1007.

Bone penetrating element 1001 may be inserted into a bone segment suchas bone segment Ph (shown in FIG. 3A). Bone penetrating element 1003 maybe inserted into a bone segment such as bone segment Pa (shown in FIG.7). Bridging element 1005 may be moved to position bone segments Ph andPa. For example, bridging element 1005 may be moved to change radialinclination α (shown in FIG. 8). A clinician may manipulate bonepenetrating element 1001 to move bone segment Ph about origin O1 (shownin FIG. 7) whether or not site 709 (shown in FIG. 7) is coincident withorigin O1. A clinician may manipulate bone penetrating element 1007 tomove bone segment Pa about origin O2 (shown in FIG. 7) whether or notsite 711 (shown in FIG. 7) is coincident with origin O2.

Bridging member 1005 may include pressure distribution member 1013.Pressure distribution member 1013 may slide in channel 1015. In a firstposition, pressure distribution member 1013 may allow a bone penetratingelement positioned by bridging member 1005 to move within receptacle1003. In the first position, bone penetrating element 1001 may movealong axis L1001 and rotate about axis L1001. In the first position,bone penetrating element 1007 may move along axis L1007 and rotate aboutaxis L1007. Movement of bone penetrating elements 1001 and 1007 maycause movement of bone segments Ph and Pa about axes O1 and O2,respectively.

In a second position, pressure distribution member 1013 may exertpressure on a bone penetrating element and substantially preventmovement of the bone penetrating element.

The pressure may be exerted on a bone penetrating element by narrowing,at least a portion, of receptacles 1003. In the second position,pressure distribution member 1013 may be configured to narrow a portionof receptacles 1003 that traverse pressure distribution member 1013.

In the second position, pressure distribution member 1013 may preventmovement, relative to bridging member 1005, of any bone penetratingelement received by receptacles 1003 and of corresponding movements ofbone segments Ph and Pa relative to origins O1 and O2, respectively.

Pressure distribution member 1013 may be set in the first position orthe second position using set screw 1017. Rotation of set screw 1017 mayslide pressure distribution member 1013 in channel 1015.

Jig 1000 may include base 1019. Movement of base 1019 may position bonepenetrating element 1001 relative to bone penetrating element 1007.Movement of base 1019 may pivot bridging element 1005 about axis L1001.Movement of base 1019 may pivot bridging element 1005 about axis L1007.Movement of base 1019 may rotate bridging element 1005 a substantiallyposterior/anterior plane. Movement of base 1019 may change radialinclination α (shown in FIG. 8).

Base 1019 may include collar 1021. Collar 1021 may include receptacle1025. Receptacle 1025 may be configured to receive bone penetratingelement 1023. Bone penetrating element 1023 may be inserted in bonesegment Pb (shown in FIG. 7).

Bone penetrating element 1023 may move within collar 1021. Bonepenetrating element 1023 may translate along axis L1023. Bonepenetrating element 1023 may rotate about axis L1023. Bone penetrationelement 1023 may be secured to collar 1021 using set screw 1027. In afirst position set screw 1027 may allow bone penetrating element 1023 tomove freely within collar 1021. In a second position, set screw 1027 mayrestrict movement of bone penetrating element 1023 within collar 1021.In the second position, set screw 1027 may distribute pressure to bonepenetrating element 1023. The pressure may be distributed relative tocollar 1021. Rotation of set screw 1027 may relieve or apply pressure tobone penetrating element 1023.

With appropriate use of set screw 1027, base 1019 may be moved up ordown along bone penetrating member 1023, and locked in place, to rotatebridging member 1005 and thus adjust, and lock, volar tilt λ (shown inFIG. 9).

Collar 1021 may translate along axis L1019. Base 1019 may includechannels 1033 and 1035 to allow movement of collar 1021. Rotation of setscrew 1029 may translate collar 1021 along axis L1019. Set screw 1029may restrict translation of collar 1021 along axis L1019. Set screw 1029may include receptacles 1031. Receptacles 1031 may be configured toreceive a bone penetrating element. The bone penetrating elementreceived by receptacle 1031 may set a position of collar 1021 along axisL1019. A position of collar 1021 relative to bridging member 1005 maycorrespond to a radial height Rh (shown in FIG. 8).

Support 1009 may join base 1019 to bridging member 1005. Movement ofbase 1019 may position bone penetrating element 1023 relative to bonepenetrating elements 1001 and 1007. Movement of base 1019 may move bonesegments Ph or Pa (shown in FIG. 7) about origins O1 and O2 (shown inFIG. 7), respectively. Movement of base 1019 may position bone segmentsPh and Pa relative to bone segment Pb (shown in FIG. 7).

Support 1009 may include receptacles 1011. Receptacles 1011 may receivea bone penetrating element. Receptacles 1011 may be configured toreceive a bone penetrating element drilled into anatomy proximate tobone B (shown in FIG. 2A). For example, if bone B is a radius R (shownin FIG. 8), receptacles 1011 may receive a bone penetrating elementdrilled into ulna U (shown in FIG. 8).

FIG. 11 shows unitary frame 1100. Frame 1100 may have may have one ormore features in common with jig 1000 (shown in FIG. 10). Frame 1100 mayinclude bridging member 1005. Illustrative projection 1107 may be usedto align bridging member 1005 with an anatomical landmark. Frame 1100may include base 1019. Frame 1100 may include receptacles 1101 and 1102.Receptacles 1101 and 1102 may be configured to a receive bonepenetrating elements 1001 and 1007 (shown in FIG. 10). Bone penetratingelements 1001 and 1007 may be inserted into bone segments Ph and Pa(shown in FIG. 3A).

Receptacles 1101 and 1102 may define Ray1. Receptacles 1101 and 1102 maybe separated by a plane that includes axis LB (shown in FIG. 3A.) Theplane may be plane 200 (shown in FIG. 2B). The plane may be plane 202(shown in FIG. 2B). Receptacles 1101 and 1102 may receive a bonepenetrating element that penetrates a half-space of bone B (shown inFIG. 2A). The half-space may be half-space 203, 205, 207 or 209 (shownin FIG. 2B).

A bone penetrating element received by receptacle 1101 may be insertedinto a segment of bone B (shown in FIG. 2A). The bone segment may residein the half-space including receptacle 1101. A bone penetrating elementreceived by receptacle 1102 may be inserted into a segment of bone B.The bone segment may reside in the half-space including receptacle 1102.

Receptacle 1103 may be configured to receive bone penetrating element1023 (shown in FIG. 10). Receptacle 1103 may be configured to directbone penetrating element 1023 into bone B (shown in FIG. 2A). Bonepenetrating element 1023 may be drilled into bone segment Pb (shown inFIG. 3A). Receptacle 1103 may direct bone penetrating element 1023substantially into plane 200 (shown in FIG. 2B). Plane 200 may bisectbone B. Plane 200 may define half-spaces 207 and 205 (shown in FIG. 2B).Receptacle 1103 may direct bone penetrating element substantially alongplane 202 (shown in FIG. 2B). Plane 202 may bisect bone B. Plane 202 maydefine half-spaces 203 and 209 (shown in FIG. 2B).

Receptacle 1103 and receptacle 1101 may define Ray2. Ray1 and Ray2 mayform angle ρ. Angle ρ may be adjusted by rotating set screw 1029.Rotation of set screw 1029 may correspond to movement of receptacle 1103along a projection of LB. Rotation of set screw 1029 may apply pressureto bone penetrating elements 1001, 1007 and 1023 (shown in FIG. 10). Thepressure may move bone segments Ph and Pa relative to bone segment Pb(shown in FIG. 3A).

Angle ρ may be set by drilling a bone penetrating element thoughreceptacle 1031. Angle ρ may correspond to a radial height Rh (shown inFIG. 8). Ray1 and Ray2 may be selected based on an anatomicalcharacteristic of a bone.

Angle θ may be formed between Ray1 and a projection of axis LB. Angle θmay be selected to correspond to radial inclination α (shown in FIG. 8).Angle θ may be selected to correspond to volar tilt λ (shown in FIG. 9).Angle θ may be adjusted by rotating bridging member 1005. Angle θ may beset by drilling bone penetrating element 1023 through receptacle 1103and a bone segment such as bone segment Pb (shown in FIG. 7).

Bridging member 1005, support 1009 and base 1019 may define recess 1105.Recess 1105 may provide unobstructed access to bone B (shown in FIG.2A). Recess 1105 may facilitate imaging of bone segments Pb, Ph and Pa(shown in FIG. 3A) using imaging system 504 (shown in FIG. 5).

FIG. 12A shows illustrative therapeutic scenario 1200. Bone segment Bsis separated from radius R. The separation may be due to a fracture suchas fracture Fh or fracture Fa (shown in FIG. 3A). A device such as jig1000 (shown in FIG. 10) or unitary frame 1100 (shown in FIG. 11) may beused to position bone segment Bs relative to radius R. Radius R may havea longitudinal axis LR. A clinician may therapeutically position bonesegment Bs relative to radius R. For example, the clinician may adjustvolar tilt λ (shown in FIG. 9).

Bone penetrating element 1001 may be secured to bridging member 1005 byset screw 1017 and pressure distribution member 1013. Bone penetratingmember 1001 may be drilled into bone segment Bs. Bone penetrating member1001 may be used to manipulate a position of bone segment Bs about acenter of bone segment Bs.

Bridging member 1005 may be secured to base 1019 via support 1009. Bonepenetrating member 1023 may pass through base 1019 and collar 1021 viareceptacle 1025 (shown in FIG. 10). Bone penetrating member 1023 maypass into radius R. Bridging member 1005 may be rotated by translatingbase 1019 along axis L1023. Base 1019 may be prevented fromsubstantially translating along axis L1019 by collar 1021 and set screw1029.

Translating base 1019 along axis L1023 and rotating bridging member 1005may rotate bone segment Bs. Rotation of bone segment Bs may adjust angleγ. Angle γ may be adjusted to correspond to volar tilt lambda. Angle γmay be set using set screw 1027. Set screw 1027 may substantial preventmovement of base 1019 along axis L1023.

FIG. 12B shows pressure distribution member 1013. Pressure distributionmember 1013 may include one or more vias such as 1252. Each of the viasmay correspond to one of receptacles 1003 (shown in FIGS. 10 and 11).Via 1252 is a pass-through for bone penetrating members such as 1001 and1007 (shown in FIG. 10). Via 1252 may include wide end 1254 and narrowend 1256. Via 1252 may have length 1, which may be greater than thediameter of the corresponding receptacle. Pressure distribution member1013 may, guided by channels 1258 and 1260, slide longitudinally. Detentsurfaces 1262 and 1264 may limit the longitudinal motion by interferencewith detents (not shown) from bridging member 1005 that are positionedin the guide channels.

When a bone penetrating member is inserted or adjusted within areceptacle 1003, wide end 1254 is aligned with the receptacle. When thebone penetrating member is locked, pressure distribution member 1013 isshifted so that narrow end 1256 is aligned with the receptacle. Narrowend 1256 may be sufficiently narrow to apply pressure to the bonepenetrating member to hold the bone penetrating member relative tobridging member 1005.

FIG. 12C shows pressure distribution member 1013 within bridging member1005. Bone penetrating members 1001 and 1007 pass through vias inpressure distribution member 1013. Via 1252 is not occupied by apressure distribution member. Detent surface 1264 abuts detent 2180.Detent surface 1262 is displaced from detent 2182. Pressure distributionmember 1013 is therefore in an unlocked configuration. Set screw 1017 isaffixed to pressure distribution member 1013 (out of the plane of theFIG.) such that set screw 1017 can displace pressure distribution member1013 and generate pressure that is transmitted by pressure distributionmember 1013 substantially simultaneously to any bone engaging membersthat may be present in bridging member 1005.

Illustrative projection 1107 may be used to align bridging member 1005with an anatomical landmark.

FIG. 12B shows pressure distribution member 1013 within bridging member1005. Bone penetrating members 1001 and 1007 pass through vias inpressure distribution member 1013. Via 1252 is not occupied by apressure distribution member. Detent surface 1264 abuts detent 2180.Detent surface 1262 is displaced from detent 2182. Pressure distributionmember 1013 is therefore in an unlocked configuration. Set screw 1017 isaffixed to pressure distribution member 1013 (out of the plane of theFIG.) such that set screw 1017 can displace pressure distribution member1013 and generate pressure that is transmitted by pressure distributionmember 1013 substantially simultaneously to any bone engaging membersthat may be present in bridging member 1005.

FIG. 13 shows illustrative jig 1300. Jig 1300 may include a first bonefragment manipulator 1312. First bone fragment manipulator 1312 mayinclude bone penetrating member 1315. Bone penetrating member 1315 maybe secured to a bone segment such as bone segment Pa or bone segment Ph(shown in FIG. 3A). First bone fragment manipulator 1312 may includetube 1317. Tube 1317 may include receptacle 1326. Receptacle 1326 mayreceive bone penetrating member 1315.

Bone penetrating member 1315, when secured to a bone, may displace thebone segment along axes X, Y and Z. Bone penetrating member 1315, whensecured to the bone segment may rotate the bone segment about axes X, Yand Z. Displacement or rotation of the bone segment may correspond todisplacement or rotation of bone segment about an origin of the bonesegment. Displacement or rotation of the bone segment may position thebone segment at an appropriate therapeutic position relative to areference bone segment such as Pb (shown in FIG. 3A).

The first bone fragment manipulator 1312 may include collar support1325. Collar support 1325 may be configured to translate in plane X-Y.Tube 1317 may include articulating surface 1319. Articulating surface1319 may permit displacement and rotation of bone penetrating member1315 about axes X, Y and Z. Articulating surface 1319 may articulaterelative to collar support 1325.

Tube 1317 may rotate about axis Z. Tube 1317 may include outer threads1327. Tube 1317 may threadedly engage female threaded member 1318.Female threaded member 1318 may include articulating surface 1319.Threaded engagement of tube 1317 and may displace tube 1317 relative tofemale threaded member 1318. Threaded engagement of tube 1317 and femalethreaded member 1318 may apply or relieve pressure on bone penetratingmember 1315. Threaded engagement of tube 1317 and female threaded member1318 may apply or relieve pressure on articulating surface 1319.Threaded engagement of tube 1317 and female threaded member 1318 mayapply or relieve pressure on collar support 1325. Threaded engagement oftube 1317 and female threaded member 1318 may apply or relieve pressureon frame 1323. Frame 1323 may include frame cover 1324.

Pressure applied to bone penetrating member 1315, articulating surface1319, collar support 1325 and frame 1323 may substantially fix aposition of the bone segment secured to bone penetrating member 1315.

Jig 1300 may include second bone fragment manipulator 1314. Second bonefragment manipulator 1314 may have one or more features in common withfirst bone fragment manipulator 1312. For example, the second bonefragment manipulator may include bone penetrating member 1313, tube1329, threads 1335, articulating surface 1333, collar support 1331 andfemale threaded member 1332.

Second bone fragment manipulator 1314 may displace or rotate a secondbone segment such as bone segment Pa or Ph. Second bone fragmentmanipulator 1314 may substantially fix a position of the bone segmentsecured to bone penetrating member 1313. Second bone fragmentmanipulator 1314 may position the second bone segment relative to thefirst bone segment.

Jig 1300 may include base 1301. Base 1301 may include slider 1305.Slider 1305 may slide along axis L1301 in channel 1303. Set screw 1307may set a position of slider 1305 along axis L1301. Slider 1305 mayinclude receptacles 1321. Receptacles 1321 may receive bone penetratingmember 1311. Bone penetrating member may have may have one or morefeatures in common with bone penetrating members 1001, 1007 or 1023(shown in FIG. 10).

Bone penetrating member 1311 may be secured to a reference bone segmentsuch as segment Pb (shown in FIG. 3A). Slider 1305 and base 1301 mayrotate about axis L1311. Rotation about axis L1311 may position thefirst and second bone segments relative to the reference bone segment. Aposition about axis L1311 may be substantially fixed by rotating setscrew 1309. Rotation of set screw 1309 may apply or relieve pressure onbone penetrating member 1311.

Slider 1305 and base 1301 may translate along axis L1311. Translationalong axis L1311 may position the first and second bone segmentsrelative to the reference bone segment. For example, translation alongaxis L1311 may position the first and second bone segments at a volartilt (shown in FIG. 9) or at a radial inclination (shown in FIG. 8). Aposition of slider 1305 relative to base 1301 along axis L1311 may beset by rotating set screw 1309. Rotation of set screw 1309 may apply orrelieve pressure to base 1301.

Base 1301 may translate along axis L1301. Translation along axis L1301may position the first and second bone segments relative to thereference bone segment. For example, translation along axis L1301 mayposition the first and second bone segments at a radial height (shown inFIG. 8). A position of base 1301 along axis L1301 may be set by rotatingset screw 1307. Rotation of set screw 1307 may apply or relieve pressureon base 1301. A position of slider 1305 relative to base 1301 may be setby securing a bone penetrating member (not shown) to the reference bonevia receptacle 1321.

FIG. 14 shows illustrative bone fragment manipulator 1400. Bone fragmentmanipulator 1312 or bone fragment manipulator 1314 may have one or morefeatures in common with bone fragment manipulator 1400. Bone fragmentmanipulator includes collar 1401 and bone penetrating member 1315.Collar 1401 includes tube 1317. Tube 1317 may include a cannula forreceiving bone penetrating member 1403. The cannula may have one or morefeatures in common with receptacle 1326 (shown in FIG. 13). Tube 1317includes outer threads 1327. Threads 1327 may engage female threadedmember 1318. Female threaded member 1318 may include articulatingsurface 1319. Articulating surface 1319 may include a substantiallyspherically shaped portion.

Collar 1401 may include tapered form 1405. Tapered form 1405 may includearticulating surface 1411. Articulating surface 1411 may include asubstantially spherically shaped portion. Engagement of tube 1317 andtapered form 1405 may apply or relieve pressure on retention fingers1413, for example, like a collet. Pressure applied to retention fingers1413 may substantially fix a position of bone penetrating member 1315.Pressure applied to retention fingers 1413 may substantially fix aposition of bone penetrating member 1315 along or about axis Z.

Articulating surfaces 1411 and 1319 may provide a freedom of movement tocollar 1401 relative to collar support 1325. Articulating surfaces 1411and 1319 may allow collar 1401 to freedom to translate and rotate aboutaxes X, Y and Z. Articulating surfaces 1411 and 1319 may facilitatemovement of a bone segment secured to bone fragment manipulator 1400along and about three orthogonal axes.

FIG. 15 shows illustrative component 1500. Component 1500 may includetube 1317 threadedly engaged with female threaded member 1318. Component1500 may include retention fingers 1413. Threaded engagement of tube1317 and female threaded member 1318 may direct retention fingers 1413into tapered form 1405 (shown in FIG. 14). Threaded engagement of tube1317 and female threaded member 1318 may displace female threaded member1318 relative to tapered form 1411.

FIG. 16 shows tube 1600. Tube 1600 may include one or more of thefeatures of tube 1317. Tube 1600 may include cannula 1601. Cannula 1601may be configured to receive bone penetrating member 1315.

Tube 1600 may include retention fingers 1413. Retention fingers 1413 maybe associated with a first radius r1. Radius r1 may be measured withrespect to a longitudinal axis L1601 that passes through a center ofcannula 1601. Retention fingers 1413 may be associated with a secondradius r2. Radius r2 may be measured with respect to a center of cannula1601.

Radii r1 and r2 may define a taper associated with retention fingers1413. Tapered form 1405 (shown in FIG. 14) may be configured to applypressure to retention fingers 1413. The pressure may compress retentionfingers 1413 against a bone penetration member inserted into cannula1601.

FIG. 17 shows illustrative component 1700. Component 1700 may includetube 1317 and tapered form 1405. Tapered form 1405 may be configured toreceive retention fingers 1413. Tapered form 1405 may include surface1701.

FIG. 18 is view of tapered form 1405 along lines 18-18 (shown in FIG.17). Tapered form 1405 may include a cannula 1801. Cannula 1801 andcannula 1601 (shown in FIG. 16) may be concentric. Cannula 1801 mayinclude a radius r3. Radius r3 may have a magnitude less than amagnitude of radius r2 (shown in FIG. 16). Radius r3 may form detent1803. Detent 1803 may be configured to compress retention fingers 1413.

Radii r3 and r4 may define a taper. The taper defined by radii r3 and r4may correspond to the taper defined by radii r1 and r2. The taperdefined by radii r3 and r4 may be configured to compress retentionfingers 1413.

FIG. 19 shows illustrative components 1900. Components 1900 mayillustrate features of jig 1300 encapsulated by frame 1323.

Collar support 1325 may include upper plate 1905 and lower plate 1901.Articulating surface 1319 may be configured to articulate against upperplate 1905. Articulating surface 1411 (shown in FIG. 14) may beconfigured to articulate against lower plate 1901. Articulation againstupper plate 1905 and lower plate 1901 may allow movement of bonefragment manipulator 1312 about and along axes X, Y and Z.

Upper plate 1905 may be displaced from lower plate 1901. Displacement ofupper plate 1905 from lower plate 1901 may be constrained by frame 1323(shown in FIG. 13). Displacement of upper plate 1905 from lower plate1901 against frame 1323 may apply pressure to frame 1323.

Collar support 1331 may include upper plate 1907 and lower plate 1903.Upper plate 1907 and lower plate 1903 may have one or more features incommon with upper plate 1905 and lower plate 1901, respectively. Bonefragment manipulator 1314 may have one or more features in common withbone fragment manipulator 1312.

FIG. 20 shows illustrative cross-section 2000 taken along lines 20-20(shown in FIG. 13). Outer threads 1327 may engage female threaded member1318. Threaded engagement of tube 1317 and female threaded member 1318may displace female threaded member 1318 from tapered form 1405.Threaded engagement of tube 1317 and female threaded member 1318 maydisplace tube 1317 relative to female threaded member 1318. Threadedengagement of tube 1317 and female threaded member 1318 may directretention fingers 1413 into tapered form 1405.

In tapered form 1405, detent 1803 and cannula 1801 (shown in FIG. 18)may compress retention fingers 1413 against bone penetrating member1315. Compression of retention fingers 1413 against bone penetratingmember 1315 may substantially prevent movement of bone penetratingmember 1315 within tube 1317.

Compression of retention fingers 1413 may be limited by bone penetratingmember 1315. Expansion of retention fingers 1413 may be limited bydetent 1803 and cannula 1801. Limits imposed by bone penetrating member1315, detent 1803 and cannula 1801 may displace female threaded member1318 from tapered form 1405. Displacement of female threaded member 1318from tapered form 1405 may displace upper plate 1905 from lower plate1901. Displacement of upper plate 1905 from lower plate 1901 may belimited by frame 1323.

Displacement of female threaded member 1318 from tapered form 1405 anddisplacement of upper plate 1905 from lower plate 1901 may generatepressure within frame 1323. Pressure within frame 1323 may fix aposition of tube 1317 relative to collar support 1325. Pressure withinframe 1323 may fix a position of collar support 1325 relative to frame1323 (shown in FIG. 13). Pressure within frame 1323 may substantiallyprevent movement of bone manipulator 1312. Pressure within frame 1323may fix a position of bone manipulator 1312. Pressure within frame 1323may fix a position of a bone segment secured to bone manipulator 1312.

FIG. 21 shows illustrative component 2100. Component 2100 may includecollar 2101. Collar 2101 may include tube 2102. Tube 2102 may includeouter threads 2103. Collar 2101 may include female threaded member 2107.Collar 2101 may include receptacle 2105. Receptacle 2105 may beconfigured to receive a bone penetrating member such as bone penetratingmember 1315 (shown in FIG. 13). The bone penetrating member maytranslate along axis Z. The bone penetrating member may rotate aboutaxis Z. The bone penetrating member may be secured to a bone segmentsuch as bone segments Pa or Ph (shown in FIG. 3A).

Collar 2101 may include tapered form 2114. Tapered form 2114 may includeexpansion members 2115. Expansion members may be configured to engagecollar support 2109. Engagement of expansion members 2115 and collarsupport 2109 may fix a position of collar 2101 relative to collarsupport 2109. Engagement of expansion members 2115 and collar support2109 may fix a position of a bone penetrating member relative to collarsupport 2109. Engagement of expansion members 2115 and collar support2109 may fix a position of a bone segment relative to collar support2109.

Expansion members 2115 may define a substantially spherically shape.Collar 2101 may be configured to translate along axes X, Y or Z. Collar2101 may be configured to rotate about axes X, Y or Z.

Collar support 2109 may be configured to translate along axis Y. Collarsupport 2109 may be configured to translate along axis X. A set screw,such as set screw 1307 (shown in FIG. 13) may be inserted into channel2113. Collar support 2109 may be configured to pivot about the setscrew. The set screw may threadedly engage a base (not shown). The basemay be secured to a reference bone segment, such as bone segment Pb(shown in FIG. 3A). The Threaded engagement of the set screw and thebase may fix a position of collar support 2109 in plane X-Y.

Positioning collar support 2109 in plane X-Y may position a bone segmentsecured to collar support 2109 relative to the base. Positioning collarsupport 2109 in plane X-Y may position a bone segment secured to collarsupport 2109 relative to the reference bone segment secured to the base.Fixing a position of collar support 2109 relative to the base may reducea fracture Fa or Fh (shown in FIG. 3A) in bone B.

FIG. 22 shows illustrative tube 2200. Tube 2200 may include outerthreads 2103. Tube 2200 may include retention finger 2201. Retentionfinger 2101 may include radius r7. Radius r7 may be measured withrespect to a longitudinal axis L2203 that passes through a center ofcannula 2203. Retention finger 2201 may include radius r6. Radius r6 maybe measured with respect to a center of cannula 2203. Radii r6 and r7may define a taper associated with retention finger 2201.

Tube 2200 may include kerf cut 2205. Kerf cut 2205 may allow compressionof expansion finger 2201 about axis L2203. Tapered form 2114 (shown inFIG. 21) may be configured to apply pressure to retention finger 2101along the taper defined by r6 and r7. The pressure may compressretention finger 2101. The pressure may compress retention finger 2101against a bone penetration member inserted into cannula 2203.

FIG. 23 shows a cross-section of component 2100 along lines 23-23 (shownin FIG. 21). Threaded engagement of outer threads 2103 and femalethreaded member 2107 may direct retention finger 2201 into tapered form2114. Tapered form 2114 may include expansion members 2115. Tapered formmay include radius r8. Tapered form may include radius r9. Radii r8 andr9 define a taper. The taper defined by radii r8 and r9 may beconfigured to compress retention finger 2201 about axis L2203 inresponse to threaded engagement of outer threads 2103 and femalethreaded member 2107.

Compression of retention finger 2201 about axis L2203 may apply pressureto a bone penetrating member inserted into cannula 2203. Compression ofretention finger 2201 may be limited by the bone penetrating member.

Pressure applied by retention finger 2201 on the bone penetrating memberand pressure applied by retention finger 2201 on taper form 2114 mayexpand expansion members 2115 against collar support 2109. Expansion ofexpansion members 2115 may be limited by collar support 2109. Pressureon the bone penetrating member and collar support 2109 may substantiallyfix a position of collar 2101. Pressure on the bone penetrating memberand collar support 2101 may substantially fix a position of the bonepenetrating member. Pressure on the bone penetrating member and collarsupport 2101 may substantially fix a position of a bone segment securedto the bone penetrating member.

FIG. 24 shows illustrative collar 2400. Collar 2400 may include one ormore of the features of collar 2101 (shown in FIG. 21). Collar 2400 mayinclude detent 2401. Detent 2401 may be affixed to expansion member2115. Detent 2401 may be configured to resist movement of tapered form2114.

FIG. 25 shows illustrative component 2500. Component 2500 may includefemale threaded member 2107, tapered form 2114, expansion member 2115and collar support 2109. Expansion member 2115 may include detent 2401.Collar support 2109 may include enclosure 2501. Enclosure 2501 may beconfigured to limit movement of tapered form 2114 relative to collarsupport 2109.

Limited movement of tapered form 2114 may facilitate release of pressurewithin collar support 2109 in response to threaded engagement of tube2102 and female threaded member 2107. Limited movement of tapered form2114 may facilitate application of pressure within collar support 2109in response to threaded engagement of tube 2102 and female threadedmember 2107.

FIG. 26 shows illustrative therapeutic scenario 2600. Bone fragmentmanipulator 1312 may be secured to bone segment Ph. Bone fragmentmanipulator may position bone segment Ph along three orthogonal axes.Bone fragment manipulator 1312 may position bone segment Ph by rotatingbone segment Ph about three orthogonal axes. The three orthogonal axesmay originate originating at an origin (shown in FIG. 7) of bone segmentPh. Bone segment Ph may be positioned relative to bone segment Pa. Bonesegment Ph may be positioned relative to reference bone segment Pb. Bonefragment manipulator 1312 may lock a position of bone segment Phrelative to another bone segment.

Bone fragment manipulator 1314 may be secured to bone segment Pa. Bonefragment manipulator may position bone segment Pa along three orthogonalaxes. Bone fragment manipulator 1314 may rotate bone segment Pa aboutthree orthogonal axes. The three orthogonal axes may originateoriginating at an origin (shown in FIG. 7) of bone segment Pa. Bonesegment Pa may be positioned relative to bone segment Ph. Bone segmentmay be positioned relative to reference bone segment Pb. Bone fragmentmanipulator 1314 may lock a position of bone segment Pa relative toanother bone segment.

Slider 1305 may position bone segments Pa and Ph relative to referencebone segment Pb. Bone penetrating member 2601 may be inserted intoreceptacle 1321 (shown in FIG. 13) and secured to Pb. A position ofslider 1305 along bone penetrating members 1311 and 2601 may be lockedby rotating set screws 1309 and 1307.

Set screw 1307 may apply pressure to base 1301. Set screw 1307 may applypressure by pressing slider 1305 and slider bottom 2603 against base1301. The pressure may substantially fix a position of sider 1305 andslider bottom 2603. The pressure may substantially fix a position ofbase 1301 relative to Pb. The pressure may substantially fix a positionof bone segments Pa and Ph relative to Pb.

Bone segments Pa, Ph and Pb may be locked at a therapeutic distancesfrom each other. Locking a position of bone segments Ph, Pa and Pb mayreduce fractures Fh and Fa.

FIG. 27 shows illustrative clinical step 2700. Clinical step 2700 mayinclude drilling bone penetrating member 2701 into bone segment Bs. Bonesegment Bs may be separated from reference bone segment Pb by fractureF. Bone penetrating member 2701 may be drilled into a location on bonesegment Bs. The location may be identified based on an anatomicalfeature of bone segment Bs. The location may be identified based on atarget site interior to bone B. The target site may correspond to atarget location of an implant inserted into bone B to repair fracture F.The location may be identified based on sites H′ or I′ on bone B.

FIG. 28 shows illustrative apparatus 2800. Apparatus 2800 may includepin 2815. Pin 2815 may have one or more features in common with bonepenetrating member 2701. Apparatus 2800 may include support 2801.Support 2801 may include extension 2805, extension 2817 and extension2807. A configuration of extension 2817 relative to extensions 2805 and2807 may be adjusted using set screw 2819 and receptacles 2811 and 2813.

Support 2801 may be configured to articulate relative to pin 2815.Support 2801 may include concave surface 2809. Support 2801 may includeconcave surface 2821. Concave surface 2809 may be configured toarticulate against pin 2815. Concave surface 2821 may be configured toarticulate against pin 2815.

Bone B (shown in FIG. 27) may be a radius. When bone B is a radius on aright side of skeleton S (shown in FIG. 1), concave surface 2809 may beconfigured to articulate against pin 2815. When bone B is a radius on aleft side of skeleton S, concave surface 2821 may be configured toarticulate against pin 2815.

Support 2801 may include indicator 2803. Support 2801 may span from afirst anatomical aspect of bone B to a second anatomical aspect of boneB. The first anatomical aspect may correspond to a location of pin 2815on bone B (see FIG. 27). Concave surface 2809 or 2821 may be positionedat the first anatomical aspect. Indicator 2803 may be positioned at thesecond anatomical aspect. When bone B is a radius, support 2801 may spanfrom a dorsal aspect of bone B (shown in FIG. 3A) to a medial aspect ofbone B (shown in FIG. 3A).

Articulation of concave surface 2809 or 2821 against pin 2815 mayposition indicator 2803 proximate to an anatomical aspect of bone B. Ina position proximate to the anatomical aspect of bone B, indicator 2803may point to an access point on bone B.

The access point may correspond to site H′ or site I′ (shown in FIG.3A). The access point may be based on a target site interior to bone B.The target site may correspond to target location of an implantconfigured to repair fracture F.

FIG. 29 shows illustrative therapeutic scenario 2900. In scenario 2900support 2801 is mutually engaged with pin 2815. Support 2801 and pin2815 when mutually engaged may define spherical surface 2907. Sphericalsurface 2907 may be centered at pin 2815 and include radius r10.Indicator 2803 may be configured to identify access point 2903. Accesspoint 2903 may be positioned at an intersection of spherical surface2907 and soft tissue (not shown) adjacent to bone B.

Support 2801 may be configured to identify an access point correspondingto an implant having a first length. Support 2801 may be configured toindicate an access point for an implant having a second length. Theimplant may be configured to repair fracture F in bone B.

For an implant having the first length, support 2801 may be configuredto define a spherical surface characterized by radius r10. When support2801 is configured to define a spherical surface characterized by radiusr10, extension 2817 may be positioned a distance 2905 from detent 2909.

For an implant having the second length, support 2801 may be configuredto define a spherical surface characterized by radius smaller inmagnitude than radius r10. When support 2801 is configured to indicatean access point for an implant having the second length, extension 2817may be positioned substantially adjacent to detent 2909.

Extension 2817 may be positioned relative to detent 2909 using set screw2819. Set screw 2819 may be secured using receptacle 2811 (shown in FIG.28) for an implant having the first length. Set screw 2819 may besecured using receptacle 2813 (shown in FIG. 28) for an implant havingthe second length.

Drill 2901 may be positioned adjacent to indicator 2803. Drill 2901 maypenetrate bone B at access point 2903.

FIG. 30 shows illustrative apparatus 3000. Apparatus 3000 may includeone or more of the features of apparatus 2800. Apparatus 3000 mayinclude support 3011. Support 3011 may include extensions 3001, 3009,3003 and 3007.

Apparatus 3000 may include bushing 3005. Bushing 3005 may includecannula 3013. Cannula 3013 may receive pin 2701. Cannula 3013 may definea concave surface of bushing 3005. Pin 2701 may articulate against theconcave surface of bushing 3005. Support 3011 may articulate relative topin 2701. A support that includes bushing 3005 for receiving pin 2701may limit movement of support relative to pin 2701. Limited movement ofsupport relative to pin 2701 may reduce measurement error in determiningan access point of a target site interior to bone B.

FIG. 31 shows schematic model 3150. Model 3150 illustrates principlesthat may embodied in apparatus 3000 (shown in FIG. 30). Model 3150 showspoints 3120, 3122 and 3124. Points 3120, 3122 and 3124 may be interiorto bone B. Each of points 3120, 3122 and 3124 may correspond to alocation for a bone implant such as implant 300 (shown in FIG. 3B).

Each of points 3120, 3122 and 3124 may lie on line 3127. Line 3127 maycorrespond to a pin, such as pin 2701 (shown in FIG. 27), fixed at anangle w relative to bone B.

Line 3117 may represent a uniform distance. Line 3117 may represent alength of a bone implant, such as implant 300. Line 3117 may be fixed atan orientation orthogonal to line 3127. Line 3117 may represent apointer fixed orthogonally to line 3127. Line 3117, when fixedorthogonally to line 3127 identifies points spaced apart from line 3127by uniform distance 3117.

Line 3119 may be fixed orthogonally to line 3117. Rotation of line 3119about line 3127 at a distance 3117 from line 3127 may identify sites onbone B spaced apart from line 3127 by distance 3117. Line 3119 mayrepresent an engagement element that identifies points, such as points3121, 3123 and 3125 on a convex surface of bone B a distance 3117 fromline 3127. A point of intersection of line 3119 and bone B may representan access point, such as H′ or I′ (shown in FIG. 3A) on bone B.

A change in angle w may cause line 3119 to identify points differentfrom points 3121, 3123 or 3125, but the points will remain at distance3117 from line 3119.

FIG. 32 shows illustrative pin 3200. Pin 3200 may include one or more ofthe features of pin 2701. Pin 3200 may include collar 3215. Collar 3215may include detent 3211. Collar 3215 may include detent 3213.

Detent 3211 may define a maximum penetration of end 3205 into bonesegment Bs (shown in FIG. 27). The maximum penetration may correspond todistance 3209. Detent 3213 may define a minimum elevation of support3011 or support 2801 above bone segment Bs. The minimum elevation maycorrespond to distance 3207.

FIG. 33 shows illustrative apparatus 3300. Apparatus 3300 may includesupport 3302. Support 3302 may include fixture 3301. Fixture 3301 mayinclude receptacle 3309. Receptacle 3309 may be configured to receivepin 3203 (shown in FIG. 32). Receptacle 3309 may be configured toreceive pin 2701 (shown in FIG. 27). Support 3300 may articulate againstthe pin received by receptacle 3309. Support 3300 may pivot about thepin received by receptacle 3309. Support 3300 pivot about the pin andsweep out spherical surface 3311.

Support 3300 may include extension 3303. Extension 3302 may beconfigured to extend along spherical trajectory 3313. Extension 3303 mayextend along rail 3307.

Extension 3303 may include indicator 3305. Indicator 3305 may beconfigured to indicate an access point. The access point may correspondto an intersection of spherical surface 3311 and soft tissue adjacent tobone B.

Indicator 3305 may extend away from extension 3303 along sphericaltrajectory 3315. Trajectory 3315 may be orthogonal to trajectory 3313.Extension 3303 may extend along trajectory 3313 until extension 3303contacts soft tissue adjacent to bone B. Extension 3303 may extend alongtrajectory 3313 until indicator 3305 contacts soft tissue adjacent tobone B. Indicator 3305 may indicate an access point for inserting animplant into bone B at a target site.

FIG. 34 shows illustrative apparatus 3400. Apparatus 3400 may have oneor more features in common with apparatus 3300. Pin 3203 may be securedto a bone segment such as bone segment Pa, Ph, Pb (shown in FIG. 3A) orBs (shown in FIG. 27). Detent 3211 may define a minimum elevation offixture 3301 relative to the bone segment. Detent 3213 may define amaximum elevation 3207 of fixture 3301 above the bone segment.

Pin 3203 and support 3302 may be configured such that indicator 3305points to an access point along spherical trajectory 3315 (shown in FIG.33). Pin 3203 and support 3302 may be configured such that a target sitefor an implant may correspond to end 3205 of pin 3203. The access pointalong spherical trajectory 3315 may be substantially a first distancefrom end 3205. The distance may substantially correspond to a magnitudeof radius r11. Spherical trajectory 3313 of extension 3303 may be asecond distance from end 3205. The second distance may substantiallycorrespond to a magnitude of radius r12.

The magnitude of radius r11 may substantially correspond to themagnitude of radius r12. Trajectory 3313 may be orthogonal to trajectory3315. Radius r11 may be orthogonal to radius r12. The first distance mayequal the second distance.

End 3205 may be a center of spherical trajectory 3313. End 3205 may be acenter of spherical trajectory 3315 (shown in FIG. 33). End 3205 maycorrespond to a target site interior to bone B. Indicator 3305 may beassociated with a known distance (r11) from the target site. Indicator3305 may identify an access point on bone B a known distance from thetarget site. Indicator 3305 may identify the access point on bone B at aknown distance from the target site independent of anatomicaldiscrepancies associated with bone B. Indicator 3305 may consistentlyidentify an access point on bone B a known distance from the targetsite.

FIG. 35 shows illustrative schematic model 3550. Model 3550 illustratesprinciples that may be embodied in apparatus such as 3400 (shown in FIG.34). Model 3550 shows point 3552. Point 3552 may be interior to a boneB. Point 3552 may correspond to a location for an end of a bone implantsuch as implant 300 (shown in FIG. 3B). The bone implant may have alength commensurate with line 3117.

Point 3552 may lie on line 3557. Line 3557 may correspond to a pin, suchas pin 2701 (shown in FIG. 27), fixed at angle W relative to bone B.Point 3552 may be a center of spherical surface 3563 (shown incross-section).

Each of lines 3552, 3554 and 3556 are radii of spherical surface 3563and have corresponding endpoints 3551, 3553 and 3555 on a convex portionof the surface of bone B. Each of endpoints 3551, 3553 and 3555 is thusspaced apart a distance 3117 from point 3553 and is a suitable candidatefor placing an access hole for the deployment of an implant havinglength 3117.

FIG. 36 shows illustrative apparatus 3600. Apparatus 3600 may includesupport 3611. Support 3611 may include receptacle 3619. Receptacle 3619may guide pin 2701 into bone segment Bs. Support 3611 may include marker3609. Marker 3609 may be visible under fluoroscopic imaging. Marker 3609may position support 3611 relative to bone B. Marker 3609 may positionsupport 3611 along a center-line Lb of bone B (shown in FIG. 3A). Marker3609 may be aligned based on a target site for an implant inserted intobone B.

Support 3611 may be positioned, such that pin 2701, when insertedthrough receptacle 3619 follows a subchondral surface 3603 of bone B.Support 3611 may pivot about axis Ps. Support 3611 may pivot about axisPs to reduce a displacement indicated by arrows 3617. Displacement 3617may correspond to a distance of guide 3601 from bone B.

Apparatus 3600 may include guide 3601. Guide 3601 may be positioned onbone B. Alignment member 3613 may align guide 3601 on bone B. Guide 3601may include guide surface 3615. Guide surface 3615 may be positioned todirect a surgical tool, such as drill 2901 (shown in FIG. 29) to anaccess point on bone B. Guide 3601 may be positioned on a lateral sideof bone B. Guide 3601 may be positioned on a medial side of bone B.

Apparatus 3600 may include bone penetrating members 3607 and 3605. Bonepenetrating members 3607 and 3605 may be inserted into cortical bone BCO(shown in FIG. 3A) of bone B. Bone penetrating member 3605 may beinserted into bone B through receptacle 3621. Receptacle 3621 may beconfigured to direct bone penetrating member 3605 into bone B in a“toe-nail” position. Bone penetrating member 3607 may be inserted intoradius R through a receptacle (not shown). Bone penetrating members 3607and 3605 may stabilize guide 3601 on bone B.

FIG. 37 shows illustrative apparatus 3700. Apparatus 3700 may includejig 3702. Jig 3702 may include one or more of the features of jig 1000(shown in FIG. 10).

Apparatus 3700 may include bridging member 3715. Bridging member 3715may include receptacles 3723 and 3724. Receptacle 3723 may be configuredto receive a first bone penetrating member such as bone penetratingmember 1007 (shown in FIG. 10). The first bone penetrating member may besecured to a first bone segment such as bone segments Pa or Ph (shown inFIG. 3A).

Receptacle 3724 may be configured to receive a second bone penetratingmember such as bone penetrating member 1001 (shown in FIG. 10). Thesecond bone penetrating member may be secured to a second bone segmentsuch as bone segments Pa or Ph (shown in FIG. 3A). The first and secondbone penetrating members may position the first bone segment relative tothe second bone segment. The first and second bone penetrating membersmay be secured to a dorsal side (shown in FIG. 3A) of bone B.

Apparatus 3700 may include support 3717. Support 3717 may be joined tobase 3719. Base 3719 may include receptacle 3721. Receptacle 3721 may beconfigured to receive a third bone penetrating member secured to areference bone segment. The third bone penetrating member may positionthe first and the second bone segments relative to the reference bonesegment.

Bridging member 3715 may fix a position of the first bone segmentrelative to the second bone segment. Bridging member 3715 and base 3719may fix a position of the first and second bone segments relative to thereference bone segment. Apparatus 3700 may reduce fractures Fa and Fh(shown in FIG. 3A).

Receptacle 3731 may be configured to receive pin 2701. Support 3727 mayarticulate against pin 2701. A position of support 3727 relative tochannel 3729 may be fixed by set screw 3725.

Apparatus 3700 may include guide 3709. Guide 3709 may be in mechanicalcoordination with support 3727. Support 3727 may position guide 3709 ona lateral side of bone B. Support 3727 may position guide 3709 relativeto a site interior to a fractured bone. Guide 3709 may include guidesurface 3711. Guide surface 3711 may align a surgical tool with thesite.

Apparatus 3700 may include guide surface extender 3713. Guide surfaceextender 3713 may position a guide surface extension (not shown)relative to the reference bone segment. Rotation of guide surfaceextender 3713 may fix a position of the guide surface extension relativeto the reference bone segment.

Apparatus 3700 may include channels 3703 and 3707. Bone penetratingmembers 3705 and 3707 may be inserted through channels 3707 and 3703,respectively, through cortical bone BCO (shown in FIG. 3A). Bonepenetrating members 3705 and 3707 may stabilize guide 3709 on bone B.Bone penetrating members 3705 and 3707 may be K-wires. Bone penetratingmembers 3705 and 3707 may be inserted into bone B using a wire drill.

Apparatus 3700 may include alignment members 3733 and 3701. Alignmentmembers 3733 and 3701 align guide 3709 along the reference bone.Alignment members 3733 and 3701 may align guide 3709 along a center-lineLB of bone B (shown in FIG. 3A).

FIG. 38 shows illustrative apparatus 3800. Apparatus 3800 may includejig 3801. Jig 3801 may include one or more of the features of jig 1000(shown in FIG. 10).

Apparatus 3800 may include bridging member 3837. Bridging member 3837may include receptacles 3823 and 3825. Receptacles 3823 and 3825 may beconfigured to receive bone penetrating elements such as bone penetratingmembers 1312 and 1314 (shown in FIG. 13). Bone penetrating members 1312and 1314 may each be secured to a bone segments such as Ph or Pa (shownin FIG. 3A). Set screws 3827 and 3829 may fix a position of bonepenetrating elements 1312 and 1314 relative to bridging member 3837.

Bridging member 3837 may be configured to pivot about axis Z. Axis Z maybe positioned relative to a site interior to bone B. Apparatus 3800 mayinclude a marker (not shown) positioned about axis Z. The marker mayinclude one or more of the features of marker 3609 (shown in FIG. 36).The marker may aid positioning of apparatus 3800 relative to the siteinterior to bone B. Rotation of bridging member 3837 about axis Z mayposition the bone segments secured to bone penetrating members 1312 and1314. A position of bridging member 3837 about axis Z may be fixed byset screw 3831.

Apparatus 3800 may include base 3803. Apparatus 3800 may include collar3805. Collar 3805 may include receptacles 3833 and 3835. Bonepenetrating members such as 1311 and 2601 (shown in FIG. 26) may bereceived by receptacles 3833 and 3835. Bone penetrating members such as1311 and 2601 may secure base 3803 to a reference bone segment such asbone segment Pb (shown in FIG. 3A). Set screw 3839 may position collar3805 relative to base 3803.

Apparatus 3800 may be configured to position bone segment Pa relative tobone segment Ph. Apparatus 3800 may be configured to position bonesegments Pa and Ph relative to bone segment Pb. Apparatus 3800 may beconfigured to lock a relative position of bone segments Pb, Pa and Ph.

Apparatus 3800 may include support 3811. Support 3811 may pivot aboutaxis Z. Support 3811 may include extension 3813. Extension 3813 maytranslate relative to band 3815. Set screw 3841 may fix a position ofextension 3813 relative to band 3815. Support 3811 and extension 3813may be configured to position guide 3807 relative to bone B. Alignmentmembers 3817 and 3819 may position guide 3807 relative to a center-lineLb (shown in FIG. 3A) of bone B. Guide end 3849 may indicate an accesspoint on bone B. Guide surface 3847 may be oriented to align a surgicaltool at the indicated access point.

Guide 3807 may include channels 3843 and 3845. Bone penetrating members3805 and 3807 may be inserted through channels 3707 and 3703 intocortical bone BCO (shown in FIG. 3A) to stabilize guide 3807 on bone B.Extension 3813 may include receptacle 3821. A bone penetrating membermay be inserted through receptacle 3821 into cortical bone BCO (shown inFIG. 3A) to stabilize apparatus 3800 on bone B. A bone penetratingmember may be inserted through receptacle 3821 into cortical bone BCO tocreate a pilot hole in bone B.

FIG. 39 shows illustrative apparatus 3900. Apparatus 3900 may have oneor more features in common with jig 1000 (shown in FIG. 10) or jig 1300(shown in FIG. 13).

Apparatus 3900 may include bridging member 3905. Bridging member 3905may include receptacles 3907 and 3909. Receptacles 3907 may beconfigured to receive bone penetrating members 3921 and 3919,respectively. Bone penetrating member 3921 may be secured to bonesegment Pa. A position of bone penetrating member 3921 may be fixedrelative to bridging member 3905 using a set screw (not shown) insertedinto receptacle 3931.

Bone penetrating member 3919 may be secured to bone segment Ph. Aposition of bone penetrating member 3919 may be fixed relative tobridging member 3905 using a set screw (not shown) inserted intoreceptacle 3929. Apparatus 3900 may be configured to position bonesegment Ph relative to bone segment Pa.

Apparatus 3900 may include base extensions 3911 and 3913. Base extension3913 may include receptacle 3915. Receptacle 3915 may be configured toreceive bone penetrating member 3925. Base extension 3913 may include areceptacle (not shown) configured to receive bone penetrating member3923. Bone penetrating members 3925 and 3923 may be secured to bonesegment Pb. Bone penetrating members 3925 and 3923 may be fixed relativeto base extension 3913 by one or more set screws (not shown). Baseextension 3911 may have one or more features in common with baseextension 3913.

Apparatus 3900 may be configured to position bone segment Pa relative toa center of bone segment Pa. Apparatus 3900 may be configured toposition bone segment Ph relative to a center of bone segment Ph.Apparatus 3900 may be configured to fix a position of bone segments Phand Pa relative to bone segment Pb. Apparatus 3900 may be configured toreduce fractures Fh and Fa.

Apparatus 3900 may include guide support 3903. Guide support 3903 may beconfigured to rotate about axis P1. A position of guide support 3903about axis P1 may be fixed by tightening set screw 3917. Guide support3903 may be positioned about axis P1 relative to bone segment Pb. Guidesupport 3903 may include knobbed detent 3927. Guide support 3903 mayinclude articulating surface 3931. Guide support 3903 may be affixed toa dorsal side of bone B.

FIG. 40 shows illustrative apparatus 4000. Apparatus 4000 may have oneor more features in common with the apparatus 3900. Apparatus 4000 maybe positioned relative to a site interior to bone B. Marker 4019 may bevisible under fluoroscopic imaging. Marker 4019 may be positionedrelative to the site interior to bone B.

Apparatus 4000 may include guide extension 4023. Guide extensions 3903and 4023 may be configured to position guide 4021 relative to bone B.Guide extension 3903 may pivot about axis P1. Articulating surface 3931(shown in FIG. 39) may be positioned at a distance from bone B. Aposition of articulating surface 3931 may be fixed using set screw 3917(shown in FIG. 39).

Guide extension 3903 may be configured to articulate againstarticulating surface 3931. Guide extension 4023 may pivot about axis P2.Guide extension 4023 may be configured to align guide 4021 and guidecollar 4015 with bone B.

Guide 4021 and guide collar 4015 may be detached from guide support3903. Guide 4021 and guide collar 4015 may be detached from guidesupport 3903 during reduction of fractures Fa and Fh (shown in FIG. 39).Detachment of guide 4021 and guide collar 4015 from bone B may provide asubstantially unobstructed view of bone B during the reductionprocedure.

Guide extension 4023 may include enclosure 4025. Guide extension 4023may be fixed at a position about axis P2 by knobbed detent 3927. Knobbeddetent 3927 may be maintained in a default position by a spring (notshown). Knobbed detent 3927 may include tip 4027. Tip 4027 may beconfigured to extend into enclosure 4025. Translating knobbed detentalong axis P2 may release guide 4021 and guide collar 4015 from guidesupport 3903. Translating knobbed detent along axis P2 may release tip4027 from enclosure 4025.

Guide collar 4015 may be configured to position guide 4021 on bone B.Guide collar 4015 may include alignment members 4009 and 4011. Alignmentmembers 4009 and 4011 may position guide 4021 along a center-line LB(shown in FIG. 3A) of bone B. Receptacle 4013 may be configured toreceive bone penetrating member 4005. A receptacle (not shown) may beconfigured to receive bone penetrating member 4007. The receptacle mayhave one or more features in common with receptacle 4013. Bonepenetrating members 4005 and 4007 may be secured to bone B. Bonepenetrating members 4005 and 4007 may be secured to bone B in a“toe-nail” configuration. Bone penetrating members 4005 and 4007 may fixa position of guide collar 4015 relative to bone B.

Insert 4029 may be configured to be position inside guide collar 4015.Insert 4029 may include indicator 4017. Indicator 4017 may indicate asite interior to bone B. The site may correspond to a target site of animplant configured to maintain a reduction of fractures Fa and Fh.Insert 4017 may be positioned or removed from guide collar 4015 usinghandle 4001. Inserted 4017 may be removed from guide collar 4015 afterguide collar 4015 is secured to bone B.

Handle 4001 may include bushing 4003. Bushing 4003 may be configured toreceive a bone penetrating member. The bone penetrating member may besecured to bone B. Bushing 4003 may be configured to indicate an accesspoint (shown in FIG. 29). The access point may correspond to the siteinterior to bone B. Bushing 4003 may position a surgical tool such asdrill 2901 (shown in FIG. 29) at the access point.

FIG. 41 shows illustrative apparatus 4100. Apparatus 4100 may includecollar 4143. Collar 4143 may include offset member 4139. Offset member4139 may include receptacle 4119. Receptacle 4119 may be configured toreceive bone a penetrating member. The bone penetrating member may besecured to a bone segment, such as bone segment Pa or bone segment Ph(shown in FIG. 3A).

A position of the bone penetrating member may be fixed relative tooffset member 4139. Offset member 4139 may include receptacle 4121.Receptacle 4121 may be configured to receive a set screw (not shown).The set screw may fix a position of the bone penetrating member relativeto offset member 4139.

Collar 4143 may be configured to displace the bone segment secured tothe bone penetrating member. Collar 4143 may be configured to displacethe bone segment relative to a center of the bone segment. The center ofthe bone segment may correspond to origin O1 or O2 (shown in FIG. 7).Collar 4143 may be configured to displace the bone segment along threeorthogonal axes. Collar 4143 may be configured to rotate the bonesegment about three orthogonal axes.

Collar 4143 may be configured to rotate about axis P4143. Collar 4143may be configured to rotate the bone segment about axis 4143. Offsetmember 4139 may include receptacle 4147. Receptacle 4147 may beconfigured to receive a set screw (not shown). The set screw may fix aposition of offset member 4139 about axis P4143.

Collar 4143 may be configured to displace the bone segment along axes X,Y and Z. Collar 4143 may be configured to rotate the bone segment aboutaxes X, Y and Z.

Apparatus 4100 may include collar support 4145. Collar support 4145 mayinclude hemisphere 4125 and hemisphere 4127. Hemisphere 4125 may includereceptacle 4123. Hemisphere 4127 may include female threaded member4129. Receptacle 4123 may be configured to receive a set screw (notshown). The set screw may include outer threads configured to engagefemale threaded member 4129. Engagement of the set screw and femalethreaded member 4129 may fix a position of collar 4143 along axes X, Yand Z. Engagement of the set screw and female threaded member 4129 mayfix a position of collar 4143 about axes X, Y and Z.

Apparatus 4100 may include central member 4101. Central member 4101 mayinclude receptacles 4107 and 4109. Receptacles 4107 and 4109 may each beconfigured to receive a bone penetrating member. The bone penetratingmember may be secured to a bone segment such as bone segment Pb (shownin FIG. 3A). Central member 4101 may be configured to secure apparatus4100 to a reference bone segment. Central member 4101 may be positionedrelative to a bone segment.

Central member 4101 may include receptacles 4105 and 4103. Receptacles4105 and 4103 may each be configured to receive a set screw (not shown).The set screw may fix a position of the bone penetrating member receivedby receptacle 4107 or 4109. The set screw may fix a position of centralmember 4101 relative to the bone penetrating member. The set screw mayfix a position of central member 4101 relative to the bone segmentsecured to the bone penetrating member.

Apparatus 4100 may include rail 4102 and base 4111. Rail 4102 may berigidly secured to central member 4101. Rail 4102 may include receptacle4115. Receptacle 4115 may be configured to receive a set screw (notshown). The set screw may secure base 4111 to rail 4102. Base 4111 maybe configured to translate relative to rail 4102 along axis L4111. Theset screw may fix a position of base 4111 relative to rail 4102.

Base 4111 may include bracket 4141. Bracket 4141 may be rigidly securedto base 4111. Bracket 4141 may include a receptacle (not shown). Thereceptacle may be configured to receive hemisphere 4125. Bracket 4141may be secured to hemisphere 4125.

Apparatus 4100 may be configured to position bone segment Pa relative tobone segment Ph. Apparatus 4100 may be configured to fix a position bonesegment Pa relative to bone segment Ph.

Apparatus 4100 may be configured to manipulate two or more bone segmentsrelative to a reference bone segment. Apparatus 4100 may include collar4142, collar support 4144, bracket 4140 and base 4110. Collar 4138 mayhave one or more features in common with collar 4143. Collar support4144 may have one or more features in common with collar support 4145.Bracket 4140 may have one or more features in common with bracket 4141.Base 4110 may have one or more features in common with base 4111.

Apparatus 4100 may be configured to position bone segment Pa and bonesegment Ph relative to bone segment Pb (shown in FIG. 3A). Apparatus4100 may be configured to reduce fractures Fa or Fh (shown in FIG. 3A).

Apparatus 4100 may include slider 4131. Slider 4131 may be configured totranslate relative to rail 4102. Apparatus 4100 may include targetingmember 4133. Targeting member 4133 may be configured to translaterelative to slider 4131. Targeting member 4133 may include nose 4149.Nose 4149 may include marker 4137. Marker 4137 may position apparatus4100 relative to a sit interior to bone B. Maker 4137 may be visibleduring fluoroscopic imaging.

FIG. 42 shows illustrative components 4200. Components 4200 may includecollar 4143. Collar 4143 may include articulating surface 4205.Articulating surface 4205 may include a spherical curvature.Articulating surface 4205 may be configured to translate along axes X, Yor Z. Articulating surface 4205 may be configured to rotate about axesX, Y or Z.

Components 4200 may include collar support 4145. Collar support 4145 mayinclude hemisphere 4145 and hemisphere 4127. Articulating surface 4205may be configured to articulate against hemisphere 4125. Articulatingsurface 4205 may be configured to articulate against hemisphere 4127.

Hemisphere 4127 may include female threaded member 4129. Set screw 4201may be configured to threadedly engage female threaded member 4129.Hemisphere 4125 may include receptacle 4123. Receptacle 4123 may beconfigured to receive set screw 4201. Threaded engagement of set screw4201 and female threaded member 4129 may compress hemisphere 4125 andhemisphere 4127 against articulating surface 4205.

Compression of hemisphere 4125 and hemisphere 4127 against articulatingsurface 4205 may fix a position of collar 4143 along axes X, Y and Z.Compression of hemisphere 4125 and hemisphere 4127 against articulatingsurface 4205 may fix a position of collar 4143 about axes X, Y and Z.Compression of hemisphere 4125 and hemisphere 4127 against articulatingsurface 4205 may fix a position of a bone segment secured to collar4143. The position of the bone segment may be fixed relative to centerof the bone segment. The center may correspond to origin O1 or O2 (shownin FIG. 7). The position of the bone segment may be fixed relative to areference bone segment.

Hemisphere 4125 may include edge 4211. Hemisphere 4209 may include edge4209. Collar 4143 may include female threaded member 4207. Femalethreaded member 4207 may be configured to articulate against a portionof edge 4211. Female threaded member 4207 may be configured toarticulate against a portion of edge 4209.

Female threaded member 4207 may be configured to threadedly engage setscrew 4203. Threaded engagement of set screw 4203 and female threadedmember 4207 may fix a position of offset arm 4139 about axis P4143.Threaded engagement of set screw 4203 and female threaded member 4207may fix a position of a bone segment secured to collar 4143. Theposition of the bone segment may be fixed relative to axis P4143. Theposition of the bone segment may be fixed relative to a center of thebone segment. The center of the bone segment may correspond to origin O1or O2.

FIG. 43 shows illustrative components 4300. Components 4300 may includearticulating surface 4205. Articulating surface 4205 may includereceptacle 4301. Receptacle 4301 may be configured to receive set screw4201 (shown in FIG. 42).

FIG. 44 shows cross-section 4400 along lines 44-44 (shown in FIG. 42).Cross-section 4200 shows set screw 4201 (shown in FIG. 42) passingthrough receptacle 4301 (shown in FIG. 43). Cross-section 4200 shows setscrew 4201 threadedly engaged with female threaded member 4129 (shown inFIG. 41).

Cross-section 4400 shows set screw 4203 passing through receptacle 4147(shown in FIG. 41). Cross-section 4400 shows set screw 4203 threadedlyengaged with female threaded member 4207.

FIG. 45 shows illustrative apparatus 4500. Apparatus may have one ormore features in common with apparatus 4100. Apparatus 4500 may includeslider 4131 (shown in FIG. 41). Slider 4131 may be configured totranslate along axis L4131. Slider 4131 may be configured to translaterelative to rails 4501 and 4102.

Apparatus 4500 may include central member 4101. Central member 4101 maybe secured to a bone segment. Slider 4131 may be configured to translaterelative to the bone segment.

Apparatus 4500 may include targeting member 4133. Targeting member 4133may include nose 4149 and marker 4137. Marker 4137 may include template4505. Template 4505 may be visible during fluoroscopic imaging.Targeting member 4133 may be configured to translate along axis H4149.

Translation of slider 4131 may position marker along axis L4131.Translation along axis L4131 may position marker 4137 relative to a siteinterior to bone B. Translation of targeting member 4133 may positionmarker 4137 along axis H4133. Translation along axis H4133 may positionmarker 4137 relative to a site interior to bone B.

Slider 4131 may include receptacle 4511. Threaded engagement of a setscrew (not shown) and receptacle 4511 may fix a position of slider 4131relative to rails 4501 and 4102. Targeting member 4133 may includereceptacle 4513. Threaded engagement of a set screw (not shown) andreceptacle 4513 may fix a position of targeting member 4133 relative toslider 4131.

Apparatus 4500 may include support 4503. Support 4503 may include clasp4509. Clasp 4509 may be configured to articulate against cylindricalsurface 4135. Support 4503 may be configured to articulate relative totargeting member 4133.

Support 4503 may include indicator 4507. Indicator 4507 may beconfigured to identify an access point on bone B. Support 4503 may beconfigured to identify the access point at an intersection of indicator4507 and soft tissue adjacent bone B. Indicator 4507 may be configuredto cooperate with a guide (not shown). The access point may correspondto a site interior to bone B. The access point may correspond to thesite identified by marker 4137.

FIG. 46 shows illustrative apparatus 4600. Apparatus 4600 may includebase 4601. Base 4601 may include channel 4643. Apparatus 4600 mayinclude slider 4603. Slider may include receptacles 4647 and 4645.Receptacle 4643 may be configured to receive bone penetrating member4637. Receptacle 4645 may be configured to receive bone penetratingmember 4635. Bone penetrating members 4637 and 4635 may be secured tobone segment Pb. Bone penetrating members 4637 and 4635 may securedslider 4603 to bone segment Pb. Set screws 4639 and 4641 may fix anelevation of slider 4603 relative to bone segment Pb.

Within channel 4643, slider 4603 may be configured to translate relativeto base 4601. Set screw 4605 may fix a position of slider 4603 relativeto base 4601.

Apparatus 4600 may include collar 4607. Collar 4607 may includearticulating surface 4615. Articulating surface 4615 may include asubstantially spherically curvature. Collar 4607 may include planarsurface 4614. Planar surface 4614 may include receptacles 4651.Receptacles 4651 may be configured to receive bone penetrating member4631. Bone penetrating member 4633 may be secured to bone segment Pa.

Apparatus 4600 may be configured to position bone segment Pa along axesX, Y and Z. Apparatus 4600 may be configured to rotate bone segment Paabout axes X, Y and Z. Axis Z may be off-set from bone penetratingmember 4631.

Apparatus 4600 may be configured to position bone segment Pa relative toa center of bone segment Pa. The center of bone segment Pa maycorrespond to origin O2 (shown in FIG. 7). Apparatus 4600 may beconfigured to position bone segment Pa relative to bone segment Pb.Apparatus 4600 may be configured to position bone segment Pa relative tobone segment Ph.

Apparatus 4600 may include collar support 4614. Articulating surface4615 may articulate against collar support 4614. Collar support 4614 mayinclude extensions 4653 and 4655. Set screw 4617 may be configured tocompress extensions 4653 and 4655 about plane Z-Y. Compression ofextensions 4653 and 4655 may apply pressure to articulating surface4615. The pressure may fix a position of collar 4607 relative to collarsupport 4614. The pressure may fix a position of bone penetrating member4631. The pressure may fix a position of bone segment Pa relative toorigin O2.

Apparatus 4600 may include collar 4620. Collar 4620 may includearticulating surface 4619. Articulating surface 4619 may have one ormore features in common with articulating surface 4615. Collar 4620 mayinclude extension 4609. Extension 4609 may have one or more features incommon with collar support 4614. Extension 4609 may have one or morefeatures in common with collar 4607. Extension 4609 may be configured toreceive bone penetrating member 4629. Bone penetrating 4629 may besecured to bones segments Pa and Ph. Bone penetrating member 4629 maybridge fracture Fa.

Collar 4620 may be configured to fix a position of bone segments Pa andPh relative to bone segment Pb. Set screw 4621 may fix a position ofarticulating surface 4619 relative to collar support 4618. Set screw4627 may fix a position of articulating surface 4625 relative toextension 4609. Set screws 4621 and 4627 may fix a position of bonesegments Pa and Ph relative to bone segment Pb.

Apparatus 4600 may include collar 4611. Collar 4611 may be configured toreceive bone penetrating member 4633. Bone penetrating member 4633 maybe secured to bone segment Ph. Collar 4611 may have one or more featuresin common with collar 4607. Collar 4611 may be configured to positionbone segment Ph about origin O1 (shown in FIG. 7). Apparatus 4600 mayinclude collar support 4657. Collar support 4657 may have one or morefeatures in common with collar support 4614.

Set screw 4613 may be configured to fix a position of collar 4611relative to collar support 4657. Set screw 4613 may be configured to fixa position of bone segment Ph relative to origin O1.

FIG. 47 shows illustrative apparatus 4700. Apparatus 4700 may includebridging member 4707. Bridging member 4707 may include receptacles 4701.Receptacles 4701 may be configured to receive a bone penetrating member.Receptacles 4701 may provide multiple positions for one or more bonepenetrating members. Apparatus 4700 may include a pressure distributionmember (see item 1013, FIG. 10). The pressure distribution member may beconfigured to fix a position of one or more bone penetrating membersreceived by receptacles 4701.

Apparatus 4700 may include bridging member 4705. Bridging member 4705may include receptacles 4703. Bridging member 4705 may have one or morefeatures in common with bridging member 4707.

Support 4709 may join bridging member 4707 and bridging member 4705.Support 4709 may rigidly join bridging member 4707 and bridging member4705. Support 4709 may include a hinge (not shown).

FIG. 48A shows illustrative apparatus 4800. Apparatus 4800 may includesupport 4803. Support 4803 may be configured to support soft tissue4808. Soft tissue 4808 may correspond to a first bone fragment (notshown).

Apparatus 4800 may include bracing element 4807. Bracing element 4807may substantially fix a position of soft tissue 4808 relative to support4803. Bracing element 4807 may substantially fix a position of the firstbone segment relative to support 4803.

Apparatus 4800 may include support 4801. Support 4801 may be configuredto support soft tissue 4809. Soft tissue 4809 may correspond to a secondbone fragment (not shown).

Apparatus 4800 may include bracing element 4811. Bracing element 4811may include soft tissue grasper 4823. Bracing element 4811 may includetensioning knob 4815. Bracing element 4811 may include spring 4819.Bracing element 4811 may include tensioner 4817.

Bracing element 4811 may be configured to apply tension to soft tissue4809. The tension may displace the second bone fragment from the firstbone fragment. Soft tissue grasper 4823 may be configured to applyincreasing tension as displacement of the second bone fragment from thefirst bone fragment increases.

Bracing element 4811 may be configured to substantially fix a positionof soft tissue 4809 relative to support 4801. Bracing element 48011 maysubstantially fix a position of the first bone segment relative tosupport 4803.

Apparatus 4800 may include bracing element 4813. Bracing element 4813may have one or more features in common with bracing element 4811.

Apparatus 4800 may include support 4825. Support 4825 may includereceptacle 4821. Receptacle 4821 may be configured to threadedly engagetensioning knob 4815. Threaded engagement of tensioning knob 4815 andreceptacle 4821 may increase tension in spring 4819. Tension in spring4821 may increase tension on tensioner 4817 and soft tissue grasper4823. Increased tension on soft tissue grasper 4823 may increasetraction to soft tissue 4809.

Apparatus 4800 may include set screw 4805. Set screw 4805 may beconfigured to fix a position of support 4803 relative to support 4801.Set screw 4805 may be configured to fix a position of the first bonefragment relative to the second bone fragment. Apparatus 4800 may beconfigured to reduce fractures Fa and Fh in bone B (shown in FIG. 3A).

Apparatus 4800 may reduce a fracture in bone B through application offorces applied in tension, translation, angle, and any suitablemanipulation of bone segments of bone B relative to each other.Apparatus 4800 may be “self-contained” in that it may be secureddirectly only to the patient's body and to no other structure orsupport. Because apparatus 4800 may be self-contained, the clinician mayfreely manipulate apparatus 4800 to accommodate personal, clinical ortherapeutic positioning requirements and preferences while maintainingreduction.

FIG. 48B shows illustrative apparatus 4850. Elements of apparatus 4850may have features in common with corresponding features of apparatus4800 (shown in FIG. 48). For example, support 4857 may correspond tosupport 4801. Support 4859 may correspond to support 4803.

Apparatus 4850 may include brace 4855. Brace 4855 may secure soft tissue4808 (shown in FIG. 48) against sliding relative to support 4857. Brace4855 may secure soft tissue 4808 against sliding, for example, byproviding resistance against an anterior region of the humerus.

Articulating lock 4853 may fix a position and orientation of support4859 relative to support 4857. When lock 4853 is unlocked, gap 4851,between support 4857 and support 4859 may be lengthened or shortened.

For example, during a reduction procedure, supports 4857 and 4859 may bearranged in substantially the same plane. Gap 4851 may be lengthened toapply traction. Support 4859 may then be translated downward, whilemaintaining the attitude of support 4859. Support 4859 may then betilted or rotated relative to support 4857. Lock 4853 may then beactuated to fix the position and orientation of support 4859 relative tosupport 4857.

FIG. 49 shows illustrative apparatus 4900. Apparatus 4900 may have oneor more features in common with apparatus 4800. Apparatus 4900 mayinclude supports 4803 and 4801 (shown in FIG. 48). Apparatus 4900 mayinclude ball joint 4901. Ball joint 4901 may be fixed to support 4801.Support 4805 may include a socket 4903. Socket 4903 may be configured toreceive ball joint 4901. Ball joint 4901 may articulate against aportion of socket 4903.

Supports 4801 and 4803 may be configured to translate along axes X, Yand Z. Support 4801 and 4803 may be configured to rotate about axes X, Yand Z. Supports 4801 and 4803 may be positioned at an angle sigma. Anglesigma may correspond to a relative elevation of support 4801 relative tosupport 4803. Supports 4801 and 4803 may be positioned at an angle phi.Angle phi may correspond to a planar orientation, in plane X-Y, ofsupport 4801 relative to support 4803.

Set screws 4805 4905 may threadedly engage base 4803. Set screws 48054905 may be configured to engage ball joint 4901. Set screws 4805 4905may apply pressure to ball joint 4901. The pressure may fix a positionof support 4801 relative to support 4803.

FIG. 50 shows a close-up view 5000 of a portion of apparatus 4800. View5000 shows bracing element 4813. Bracing element 4813 may include web5001. Web may include strands 5015 and 5017. Strands 5015 and 5017 mayform angle mu.

Tensioning knob 5003 may be threadedly engagement with support 4825.Threaded engagement of tensioning knob 5003 and support 4825 maycompress spring 5005 against tensioner 5007. The compression may inducetension in bracing element along axis T1. The tension and traction ofsoft tissue 5013 against web 5001 may decrease magnitude of angle mu.

Decreasing the magnitude of angle mu may increase a length of web 5001along axis T1. Decreasing the magnitude of angle mu may compress web5001 about lines T2-T2. Decreasing the magnitude of angle mu mayincrease traction of web 5001 against soft tissue 5013. Increasedtraction against soft tissue 5001 may fix a position of soft tissue 5013relative to base 4801.

Tensioner 5007 may include receptacle 5011. Set screw 5009 may beconfigured to threadedly engage receptacle 5011. Set screw 5009 may fixa position of bracing element 4813 relative to tensioner 5007.

FIG. 51 shows illustrative apparatus 5100. Apparatus 5100 may includemalleable frame 5101. Collars 5115, 5117 and 5119 may be fixed tomalleable frame 5101.

Collar 5115 may include receptacles 5109 and 5123. Receptacle 5109 maybe configured to receive a bone penetrating member. Receptacle 5123 maybe configured to receive a set screw (not shown). Engagement of the setscrew and receptacle may apply pressure to a bone penetrating memberreceived by receptacle 5109. The pressure may fix a position of the bonepenetrating member with respect to collar 5115.

Collar 5115 may include receptacle 5127. Receptacle 5127 may have one ormore features in common with receptacle 5109. Collar 5115 may includereceptacle 5129. Receptacle 5129 may have one or more features in commonwith receptacle 5123. Collar 5115 may be configured to be secured to oneor more bone segments, such as bone segments Pa, Ph or Pb (shown in FIG.3A).

Handle 5103 may position a bone segment secured to collar 5115 about acenter of the bone segment. The center of the bone segment maycorrespond to origin O1 or O2 (shown in FIG. 7). Handle 5103 mayposition collar 5115 relative to collar 5117.

Apparatus 5100 may include release mechanism 5121. Release mechanism5121 may be configured to release handle 5103 from collar 5115. Handle5103 may be removable from collar 5115.

Collar 5117 may have one or more features in common with collar 5115.Collar 5117 may include receptacle 5111. Receptacle 5111 may beconfigured to receive a bone penetrating member. A bone penetratingmember received by receptacle 5111 may be secured to a bone segment. Aposition of collar 5117 relative to the bone penetrating member may befixed. Collar 5117 may be secured to a bone segment such as bonesegments Pa, Ph or Pb (shown in FIG. 3A).

Handle 5101 may include one or more of the features of handle 5103.Handle 5101 may include a release mechanism. Handle 5105 may position abone segment secured to collar 5117 about a center of the bone segment.The center of the bone segment may correspond to origin O1 or O2 (shownin FIG. 7). Handle 5105 may position collar 5117 relative to collar5115. Handle 5101 may be removable from collar 5117.

Collar 5119 may include one or more of the features of collar 5115.Collar 5119 may include receptacle 5113. Receptacle 5113 may beconfigured to receive a bone penetrating member (not shown). A bonepenetrating member received by receptacle 5113 may be secured to a bonesegment. A position of collar 5119 relative to the bone penetratingmember may be fixed. Collar 5119 may be secured to a bone segment suchas bone segments Pa, Ph or Pb (shown in FIG. 3A).

Handle 5101 may include one or more of the features of handle 5103.Handle 5101 may include a release mechanism. Handle 5105 may position abone segment secured to collar 5117 about a center of the bone segment.The center of the bone segment may correspond to origin O1 or O2 (shownin FIG. 7). Handle 5105 may position collar 5117 relative to collar5115. Handle 5101 may be removable from collar 5117.

Malleable frame 5101 may be configured to retain a position of bonesegments Pa and Ph relative to bone segment Pb. Apparatus 5100 may beconfigured to reduce a fracture in bone B. Apparatus 5100 may beconfigured to reduce fractures Fh and Fa in bone B (shown in FIG. 3A).

FIG. 52 shows illustrative apparatus 5200. Apparatus 5200 may includetool bracket 5201. Axes X, Y and Z may be three orthogonal axes.

Apparatus 5200 may include platform 5203. Platform 5203 may bepositioned proximal to fractures Fa and Fh. Bone penetrating members5223 and 5221 may be secured to bone B.

Bone penetrating member 5223 may pass alongside indent 5241 and washer5231. Set screw 5225 may threadedly engage platform 5203. Threadedengagement of set screw 5225 and platform 5203 may press washer 5231against platform 5203. Threaded engagement of set screw 5225 andplatform 5203 may fix a position of platform 5203 relative to bonepenetrating member 5223. Threaded engagement of set screw 5225 andplatform 5203 may fix a position of platform 5203 relative to bone B.

Bone penetrating member 5221 may pass alongside indent 5243 and washer5229. Set screw 5227 may threadedly engage platform 5203. Threadedengagement of set screw 5227 and platform 5203 may press washer 5229against platform 5203. Threaded engagement of set screw 5227 andplatform 5203 may fix a position of platform 5203 relative to bonepenetrating member 5221. Threaded engagement of set screw 5227 andplatform 5203 may fix a position of platform 5203 relative to bone B.

Threaded engagement of set screws 5227 and 5225 with platform 5203 maysecure platform 5203 to bone B. Threaded engagement of set screws 5227and 5225 with platform 4203 may fix distance D. Distance D maycorrespond to a position of platform 5203 relative to bone B.

Apparatus 5200 may include housing 5215. Rod 5205 may extend fromhousing 5215 to ball joint 5209. Ball joint 5209 may be configured toarticulate against socket 5219 of tool bracket 5201. Articulation ofball joint 5209 against socket 5219 may provide tool bracket 5201freedom to translate along and rotate about three orthogonal axes, suchas axes X, Y and Z.

Knob 5237 may threadedly engage tool bracket 5201. Threaded engagementof knob 5237 and tool bracket 5201 may apply pressure to ball joint5209. The pressure may fix a position of tool bracket 5201 along orabout three orthogonal axes. The pressure may limit displacement of toolbracket 5201 relative to bone B.

Rod 5217 may extend from ball joint 5211 through bore 5245 in platform5203. Ball joint 5211 may be configured to articulate against socket5213 of housing 5215. Articulation of ball joint 5211 against socket5213 may provide housing 5201 freedom to translate along and rotateabout three orthogonal axes. Articulation of ball joint 5211 againstsocket 5213 may provide tool bracket 5201 freedom to translate along androtate about three orthogonal axes, such as axes X, Y and Z.

Knob 5235 may threadedly engage housing 5215. Threaded engagement ofknob 5235 and housing 5215 may apply pressure to ball joint 5211. Thepressure may fix a position of housing 5215 along or about threeorthogonal axes. The pressure may limit displacement of tool bracket5201 relative to bone B.

Housing 5215 may be translatable, relative to platform 5203, along axisL5203. Housing 5215 may be translatable, relative to bone B, along axisL5203. Knob 5233 may be configured to threadedly engage platform 5203.Threaded engagement of knob 5233 and platform 5203 may apply pressure torod 5217. The pressure may fix a position of housing 5215 along axisL5203. The pressure may limit displacement of tool bracket 5201 relativeto bone B.

Pressure applied by knobs 5237, 5235 and 5233 may fix a position of toolbracket 5201 relative to bone B. Tool bracket 5201 may be fixed outsidebone B relative to site 5261 interior to bone B. Tool bracket 5201 mayinclude cannula 5239. Center axis L5201 of cannula 5239 may be alignedto correspond to an axis of site 5261. A position of tool bracket 5201may be fixed such that axis L5201 corresponds to an axis of site 5261.

FIG. 53 shows illustrative apparatus 5300. Apparatus 5300 may have oneor more features in common with apparatus 5200. Apparatus 5300 mayinclude radiopaque target 5302. Radiopaque target 5302 may be configuredto attach to tool bracket 5201. Seat 5311 may be configured to attachradiopaque target 5302 to tool bracket 5201.

Radiopaque target 5302 may be configured to be removable from toolbracket 5201.

Radiopaque target 5302 may include extension 5305. Extension 5305 mayinclude targets 5301. Targets 5301 may include spokes 5303. Targets 5301may be separated by distance 5315. Spokes 5303 and distance 5315 may beconfigured to reduce parallax error when targeting a site, such as site5261 (shown in FIG. 52), interior to bone B.

Radiopaque target 5302 may include extension 5307. Extension 5307 mayinclude targets 5301. Extension 5305 may be positioned substantiallyparallel to a first anatomical viewing plane, such as plane 200 or 202(shown in FIG. 2B). Extension 5307 may be positioned substantiallyparallel to a second anatomical viewing plane, such as plane 200 or 202(shown in FIG. 2B). Extensions 5307 and be positioned in substantiallyorthogonal planes. Extension 5305 may be adjusted relative to extension5307.

Displacement of tool bracket 5201 along and about axes X, Y and Z (shownin FIG. 52) may position targets 5301 relative to bone B. Medicalimaging may be used to position targets 5301 relative to site 5261interior to bone B. Seat 5311 may be configured such that positioning oftargets 5301 relative to site 5261 positions tool bracket 5201 relativeto site 5261. Seat 5311 may be configured such that positioning oftargets 5301 relative to site 5261 positions tool bracket 5201 relativeto center-line Lb (shown in FIG. 3A) of bone B.

Positioning targets 5301 relative to site 5261 may position tool bracket5201 relative to site 5261 (shown in FIG. 52). Site 5261 may be interiorto bone B. Positioning targets 5301 relative to site 5261 may registertool bracket 5201 to site 5261. Registering tool bracket 5201 to site5261 may include aligning axis L5201 with an axis of the site. Afterregistering tool bracket 5201 to site 5261, knobs 5237, 5235 and 5233may be configured to lock a position of tool bracket 5201 relative tosite 5261.

FIG. 54 shows illustrative apparatus 5400. Apparatus 5400 may have oneor more features in common with apparatus 5200.

Apparatus 5400 may include guide tube 5401. Guide tube 5401 may beconfigured to attach to tool bracket 5201. Guide tube 5401 may beconfigured to be removed from tool bracket 5201. Guide tube 5401 may beinserted into cannula 5239.

Radiopaque target 5302 may be configured to position tool bracket 5201such that guide tube 5401, when inserted into cannula 5239, isconfigured to guide a surgical tool to site 5261. The surgical tool maybe a rotary surgical tool (not shown). Cannula 5403 may guide thesurgical tool. Cannula 5403 may be configured to guide the surgical toolalong axis L5201.

FIG. 55 shows illustrative apparatus 5500. Apparatus 5500 may have oneor more features in common with apparatus 5200.

Apparatus 5500 may include fixture 5501 fixture 5501 may be attached totool bracket 5201. Fixture 5501 may include guide passageway 5503. Guidepassageway 5503 may be configured receive wire support 5505. Wiresupport 5505 may be configured to receive a bone penetrating elementsuch as anchors 329 or 326 (shown in FIG. 3B). The bone penetratingelement may be secured to a bone segment, such as bone segments Pa orPh.

Radiopaque target 5302 may be configured to position tool bracket 5201such that guide passageway, when attached to tool bracket 5201, isoriented relative to site 5261. Radiopaque target 5302 may be configuredto position tool bracket 5201 such that guide passageway 5503, whenattached to tool bracket 5201, is oriented relative to center-line LB(shown in FIG. 3A) of bone B.

When attached to tool bracket 5201, guide passageway 5503 may be alignedwith an axis of site 5261 (shown in FIG. 52). When attached to toolbracket 5201, guide passageway 5503 may direct a bone penetrating memberreceived by wire support 5505 into bone segment Pa. The bone penetratingmember received by wire support 5505 may be secured to implant 300(shown in FIG. 3B). Implant 300 may be deployed at site 5261 (shown inFIG. 52). The bone penetrating member received by wire support 5505 maysecure bone segment Pa to implant 300.

Table 3 lists illustrative steps that may be taken for therapeutic useof the apparatus.

TABLE 3 Illustrative steps that may be taken for therapeutic use of theapparatus Illustrative FIG. Illustrative Steps and IllustrativeReference Numerals 10, 11, 1. Reduce and stabilize bone (employing oneor both of 12A, 12B, subchondral and transfracture k-wires, asappropriate). 12C 2. Place k-wire 1001 in distal end of dorsal ulnarradius. 3. Place jig on k-wire and center base along radius. 4. Insertstyloid k-wire 1007. 5. Center jig on radius (restore radialinclination). 6. Insert radius k-wire 1023. 7. Lock k-wires. 8. Restoreradial height. 9. Restore volar tilt. 13, 26 1. Place bone penetratingmembers into fracture fragments, 1314 and 1315. 2. Place 1311 in radiusor unfractured bone section. 3. Manipulate 1314 and 1315 so that bonefragments are positioned into desired locations. 4. Lock position usingfeature 1329 5. Adjust relative position of fragments using adjustmentof member 1307, 1305. 29, 28, 1. Position k-wire into desired locationof distal tip 30 of the implant. Usually centered under the lunatefacet. 2. Apply jig onto k-wire engagement feature 2815. 3. Swing downjig until it comes into contact with the bone. 4. Drill into bone atlocation identified in step 3. 32, 33 1. Position k-wire into desiredlocation of distal tip of the implant. Usually centered under the lunatefacet. Drill into bone until shoulder of wire rests on surface of bone.2. Apply jig onto k-wire engagement feature 3309. Bring jig down ontoshoulder of k-wire. 3. Swing down jig until it comes into contact withthe bone, extend length of arc as necessary to contact bone in desiredlocation. 4. Drill into bone at location identified in step 3. 36 1.Place wire under subchondral surface entering at the radial Styloidcentered in the dorsal palmer aspect. 2. Place jig over wire. 3. Swingjig down onto bone. 4. Place toe nail wires securing the jig onto thebone. 5. Use drill guide tube to direct access into bone cavity. 37 1.Position k-wire into desired location of distal tip of the implant.Usually centered under the lunate facet. 2. Apply jig onto k-wireengagement feature 3724. 3. Swing down jig until it comes into contactwith the bone. 4. Slide up and down wire as necessary to contact bone indesired location. 5. Place toe nail wires securing the jig onto thebone. 6. Use drill guide tube to direct access into bone cavity. 38, 39,40 1. Apply k-wires through distal hole locations into the bone fracturesegments. Position these wires such that the member 3809 is centered onthe bone in the position of the center of the implant. 2. Apply k-wireson proximal aspect of jig 3833 and 3835 into the long bone section ofthe radius. 3. Adjust height of the height of the broken segments withmember 3839. 4. Adjust volar tilt of fragments using member 3837. 5.Adjust radial inclination using member 3831. 6. When bone is in desiredposition mount arm 3811 onto base jig and swing down onto bone indesired position. 7. Secure jig to bone using 3843 k-wire toe nailfeatures. 8. Adjust drill tube angle to be parallel with bone axis usingfeature 3821 and 3817. 9. Access bone cavity through guide tube 3847.37, 38 1. Position radiopaque targets into desired implant location. 2.Apply jig until it comes into contact with the bone. 3. Place toe nailwires securing the jig onto the bone. 4. Use drill guide tube to directaccess into bone cavity. 41 1. Place bone penetrating members intofracture fragments, through 4211. 2. Place k-wires through 4107, 4109 inreference bone fragment. 3. Manipulate 4139 and 4110 so that bonefragments are positioned into desired locations. 4. Lock position usingfeature 4213, 4115, 4121. 5. Adjust relative position of fragments usingadjustment of member 4102. 6. Position 4149 in to desired location ofimplant. 7. Attach swing arm onto 4149 and follow similar steps asabove. 46 1. Place bone penetrating members into fracture fragments,through 4613, 4614, 4625. 2. Place k-wires through 4645, 4647 in radiusor unfractured bone section. 3. Manipulate 4633, 4631 so that bonefragments are positioned into desired locations. 4. Lock position usingfeature 4613, 4627, 4617. 5. Adjust relative position of fragments usingadjustment of member 4605. 48 1. Place broken wrist over member 4805 onjig. 2. Place fingers into traps. 3. Attach forearm to jig 4803 withsome member 4807 such as coban or ace bandage. 4. Apply tension tofingers using 4817. 5. Position angle of jig using 4805 such that thewrist is put into extension and flexion. 51 1. Place bone penetratingmembers into fracture fragments, through 5113 5111 2. Place k-wiresthrough 5129 in radius or unfractured bone section. 3. Manipulate 5107,5125 so that bone fragments are positioned into desired locations.

There are numerous other steps that may be included. Differentembodiments of the apparatus shown and described herein may be used inconjunction with different steps of methods of the invention, whether ornot listed in Table 4.

Thus, apparatus and methods for preparing a fractured bone for repair.Persons skilled in the art will appreciate that the present inventioncan be practiced by other than the described embodiments, which arepresented for purposes of illustration rather than of limitation.

The present invention is limited only by the claims that follow.

What is claimed is:
 1. Apparatus for reducing a fracture of a bone, theapparatus comprising: a bridging member that defines a first receptacleand a second receptacle, the bridging member spanning from the firstreceptacle to the second receptacle; a channel within the bridgingmember; a pressure distribution member that is slidable in the channelbetween an unlock position and a lock position; and a base rigidlyaffixed to the bridging member, the base comprising a collar thatdefines a third receptacle; wherein: the first receptacle is configuredto receive a first bone penetrating element at a position, operativelyexternal to the bone, on the first bone penetrating element; the secondreceptacle is configured to receive a second bone penetrating element ata position, operatively external to the bone, on the second bonepenetrating element; the third receptacle is configured to receive athird bone penetrating element at a position, operatively external tothe bone, on the third bone penetrating element; in the unlock position,the bridging member is moveable relative to the first and the secondbone penetrating elements, and in the lock position; the pressuredistribution member is configured to fix the bridging member relative tothe first and the second bone penetrating elements; and, the base isconfigured to move along the third bone penetrating element and bend thethird bone penetrating element along a length of the third bonepenetrating element, the length extending between the bone and the base.2. The apparatus of claim 1, wherein, the base is configured to movealong the third bone penetrating element and adjust an angle of thefirst bone penetrating element relative to a segment of the third bonepenetrating element.
 3. The apparatus of claim 2 wherein, the length ofthe third bone penetrating element is a first length; the base isconfigured to bend the third bone penetrating element along the firstlength; and the collar is configured to maintain a second length of thethird bone penetrating element substantially parallel to the first andthe second bone penetrating elements.
 4. The apparatus of claim 1wherein: the first receptacle comprises a first pass-through and asecond pass-through; and the second receptacle comprises a firstpass-through and a second pass-through; wherein the first pass-throughsare spaced apart from the second pass-throughs by a depth of thechannel.
 5. The apparatus of claim 1 wherein the pressure distributionmember is configured to slide within the channel from the unlockposition to the lock position and simultaneously apply pressure to: thefirst bone penetrating element when the first bone penetrating elementis within the first receptacle; and the second penetrating element whenthe second bone penetrating element is within the second receptacle. 6.The apparatus of claim 1 further comprising a set screw that isconfigured to maintain the pressure distribution member in the lockposition.
 7. The apparatus of claim 1 wherein the pressure distributionmember defines a first pass-through that corresponds to the firstreceptacle and defines a second pass-through that corresponds to thesecond receptacle.
 8. The apparatus of claim 7 wherein: the firstpass-through of the pressure distribution member comprises a wide endthat has a diameter greater than or equal to a diameter of the firstreceptacle; and the second pass-through of the pressure distributionmember comprises a wide end that has a diameter greater than or equal toa diameter of the second receptacle.
 9. The apparatus of claim 7wherein: the first pass-through of the pressure distribution membercomprises a narrow end that has a diameter less than the diameter of thefirst receptacle; and the second pass-through of the pressuredistribution member comprises a narrow end that has a diameter less thanthe diameter of the second receptacle.
 10. The apparatus of claim 9wherein, in the unlock position: the wide end of the first pass-throughof the pressure distribution member is aligned with the firstreceptacle; and the wide end of the second pass-through of the pressuredistribution member is aligned with the second receptacle.
 11. Theapparatus of claim 10 wherein: the first bone penetrating elementdefines a first longitudinal axis; the second bone penetrating elementdefines a second longitudinal axis; and, in the unlock position, thefirst bone penetrating element is moveable along the first longitudinalaxis and the second bone penetrating element is moveable along thesecond longitudinal axis.
 12. The apparatus of claim 11 wherein, in theunlock position, the first bone penetrating element is rotatable aboutthe first longitudinal axis and the second bone penetrating element isrotatable about the second longitudinal axis.
 13. The apparatus of claim12 wherein, in the lock position, the pressure distribution member isconfigured to fix each of the first and second bone penetrating elementslongitudinally and rotationally relative to the bridging member.
 14. Theapparatus of claim 9 wherein, in the lock position: the narrow end ofthe first pass-through of the pressure distribution member is configuredto apply pressure to the first bone penetrating element in the firstreceptacle; and the narrow end of the second pass-through of thepressure distribution member is configured to apply pressure to thesecond bone penetrating element in the second receptacle.
 15. Theapparatus of claim 14 wherein, the pressure applied to the first and thesecond bone penetrating elements is configured to fix the first and thesecond bone penetrating elements relative to the bridging member. 16.The apparatus of claim 1 wherein, the channel is a first channel, theapparatus further comprising a second channel and the collar is slidablymounted in the second channel.
 17. The apparatus of claim 16 furthercomprising a length lock configured to fix a position of the collaralong the second channel.
 18. The apparatus of claim 1 furthercomprising an elevation lock configured to fix the base along the thirdbone penetrating element.
 19. The apparatus of claim 18, the basefurther comprising a third channel and the elevation lock is configuredto slide in the third channel in response to movement of the collar inthe second channel.
 20. The apparatus of claim 1 further comprising asupport that rigidly fixes the base to the bridging member.
 21. Theapparatus of claim 20 wherein the support defines a recess that isconfigured to provide unobstructed imaging of the fracture. 22.Apparatus for reducing a fracture of a bone, the bone comprising a firstsegment, a second segment and a third segment, the apparatus comprising:a bridging member: defining a first receptacle that is configured toreceive a first bone penetrating element at a position, operativelyexternal to the first segment, on the first bone penetrating elementwhen the first bone penetrating element is inserted into the firstsegment; defining a second receptacle that is configured to receive asecond bone penetrating element at a position, operatively external tothe second segment, on the second bone penetrating element when thesecond bone penetrating element is inserted into the second segment; andcomprising a pressure source that is configured to fix a position of thebridging member relative to the first and the second bone penetratingelements; a base rigidly joined to the bridging member, the basecomprising a channel extending along a longitudinal axis of the base; acollar that is slidable in the channel, the collar defining a thirdreceptacle that is configured to receive a third bone penetratingelement at a first position, operatively external to the third segment,on the third bone penetrating element when the third bone penetratingelement is inserted into the third segment; and a length lock that isconfigured to fix a position of the collar along the channel; wherein,in operation, when the bridging member is fixed with respect to thefirst and the second bone penetrating elements and the collar is fixedat the position along the channel, the collar is configured to movealong the third bone penetrating element and bend the third bonepenetrating element at a second position, operatively external to thethird segment, on the third bone penetrating element.
 23. The apparatusof claim 22 wherein the channel is a first channel, the base comprising:a second channel that extends along the longitudinal axis and issubstantially perpendicular to the first channel; and an elevation lockthat is configured to: slide in the second channel when the collarslides in the first channel; and fix a position of the collar on thethird bone penetrating element.
 24. The apparatus of claim 22 whereinthe length lock comprises a set screw that is in mechanicalcommunication with the collar, and rotation of the set screw isconfigured to move the collar along the first channel.
 25. The apparatusof claim 22, wherein, the bone is a first bone, a support that rigidlyjoins the base to the bridging member defines a fourth receptacle thatis configured to: receive a fourth bone penetrating element; and directthe fourth bone penetrating element into a second bone.
 26. Theapparatus of claim 25 wherein the first bone is a radius and the secondbone is an ulna.